https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-intro-equations/a/introduction-to-equations 2021-12-16T15:37:07.463764128Z Intro to equations Learn what an equation is and what it means to find the solution of an equation. article https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-solving-equations/e/visualize-equations 2023-12-11T22:10:22.66384181Z Solve equations from visual models Use a visual model of an equation to solve for the unknown in the equation.   Lindsay exercise https://www.khanacademy.org/math/revision-mh-math-class-6/x01cb2212e31ce997:decimal-fractions/x01cb2212e31ce997:equations/v/writing-expressions-with-variables_indian_accent 2025-06-05T07:09:47.125536708Z Writing expressions with variables To write simple algebraic expressions from mathematical statements, you can follow this procedure: 1. Identify the key terms in the written statement (e.g. "sum," "product," "quantity"). 2. Break the statement down into its component parts. 3. Translate each part into algebraic form, using the appropriate symbols and operations. 4. Simplify the expression if needed. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Writing expressions with variables To write simple algebraic expressions from mathematical statements, you can follow this procedure: 1. Identify the key terms in the written statement (e.g. "sum," "product," "quantity"). 2. Break the statement down into its component parts. 3. Translate each part into algebraic form, using the appropriate symbols and operations. 4. Simplify the expression if needed. https://cdn.kastatic.org/ka-youtube-converted/v0u6oMoujfA.mp4/v0u6oMoujfA.mp4 82 Finding the Unknown https://www.khanacademy.org/math/revision-mh-math-class-6/x01cb2212e31ce997:decimal-fractions/x01cb2212e31ce997:equations/v/writing-expressions-word-problems_indian_accent 2025-06-05T07:09:47.125536708Z Writing expressions word problems Learn how to write expressions with variables to describe situations described in word problems. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Writing expressions word problems Learn how to write expressions with variables to describe situations described in word problems. https://cdn.kastatic.org/ka-youtube-converted/_1-zJK74XA0.mp4/_1-zJK74XA0.mp4 256 Finding the Unknown https://www.khanacademy.org/math/algebra-home/alg-intro-to-algebra/alg-writing-expressions/a/writing-expressions 2021-04-29T07:49:29Z Writing expressions Learn to write algebraic expressions in and out of word problems. article https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-writing-expressions/e/writing-expressions-with-variables-1 2026-02-27T05:20:50.375487085Z Writing basic expressions with variables Practice writing basic algebraic expressions to match verbal descriptions of mathematical operations. Ben exercise https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundation-algebra/x2f8bb11595b61c86:intro-variables/v/variables-and-expressions-1 2023-06-11T20:09:24.00592199Z Evaluating an expression with one variable In this math lesson, we explore the expression 5 t plus 3 to calculate the cost of participating in a hospital raffle fundraiser. By evaluating the expression for different values of t, the number of tickets purchased, we find the costs for buying 1, 8, and 10 tickets, which are 8, 43, and 53 dollars, respectively. Sal Khan video https://cdn.kastatic.org/googleusercontent/uIAXUtdyJRfQMcSwOvbNBBbvYyFxGpIsznKE9aM5HHsUTWfdzOTNmL_BQHea9f9oD_NaMb5EtADwbhHP-x3Orao Evaluating an expression with one variable In this math lesson, we explore the expression 5 t plus 3 to calculate the cost of participating in a hospital raffle fundraiser. By evaluating the expression for different values of t, the number of tickets purchased, we find the costs for buying 1, 8, and 10 tickets, which are 8, 43, and 53 dollars, respectively. https://cdn.kastatic.org/ka-youtube-converted/AJNDeVt9UOo.mp4/AJNDeVt9UOo.mp4 120 Finding the Unknown https://www.khanacademy.org/math/revision-mh-math-class-6/x01cb2212e31ce997:decimal-fractions/x01cb2212e31ce997:equations/v/testing-solutions-to-equations-indian-accent 2025-06-05T06:01:43.515132284Z Testing solutions to equations In this math lesson, we learn how to solve an equation with one variable. We test different values for x to see which one satisfies the equation. By substituting x with the given options, we find the correct solution that makes both sides of the equation equal. Practice makes perfect! Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Testing solutions to equations In this math lesson, we learn how to solve an equation with one variable. We test different values for x to see which one satisfies the equation. By substituting x with the given options, we find the correct solution that makes both sides of the equation equal. Practice makes perfect! https://cdn.kastatic.org/ka-youtube-converted/nBa6LAcHOBw.mp4/nBa6LAcHOBw.mp4 219 Finding the Unknown https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-intro-equations/e/testing-solutions-of-equations-inequalities 2026-04-09T15:00:37.748529754Z Testing solutions to equations Practice plugging in values to equations and checking to see if the equations hold true. Ben S. exercise https://www.khanacademy.org/math/class-7-ncf/x063f95a40c290960:finding-the-unknown/x063f95a40c290960:solving-an-equation/v/one-step-addition-equation-indian-accent 2025-06-05T06:01:43.515132284Z One-step addition equation In this math lesson, we learn to solve simple equations with one variable. We isolate the variable by removing other terms on the same side. For example, if a + 5 = 54, we subtract 5 from both sides to find a = 49. Finally, we check our solution by substituting the value back into the original equation. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw One-step addition equation In this math lesson, we learn to solve simple equations with one variable. We isolate the variable by removing other terms on the same side. For example, if a + 5 = 54, we subtract 5 from both sides to find a = 49. Finally, we check our solution by substituting the value back into the original equation. https://cdn.kastatic.org/ka-youtube-converted/9YC6oW_T9-E.mp4/9YC6oW_T9-E.mp4 125 Finding the Unknown https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-one-step-add-sub-equations/v/examples-of-one-step-equations-with-fractions-and-decimals 2023-06-30T02:13:42.781179102Z One-step addition & subtraction equations: fractions & decimals In this math lesson, we practice solving equations with variables and fractions. We learn to isolate the variable by adding or subtracting terms from both sides of the equation. This helps us find the value of the variable, making the equation true. Keep practicing and have fun! video https://cdn.kastatic.org/googleusercontent/EAf_H26O1gYbaQ9QruovQdGYRZqaid0GE9YE_CQPCXYUvuTjzpB5S9A3K00gIIXOTJU0pm5QOgy91sm3Fi_otrVD One-step addition & subtraction equations: fractions & decimals In this math lesson, we practice solving equations with variables and fractions. We learn to isolate the variable by adding or subtracting terms from both sides of the equation. This helps us find the value of the variable, making the equation true. Keep practicing and have fun! https://cdn.kastatic.org/ka-youtube-converted/XD-FDGdWnR8.mp4/XD-FDGdWnR8.mp4 272 Finding the Unknown https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-one-step-add-sub-equations/e/one_step_equations 2026-03-24T23:41:07.080866137Z One-step addition & subtraction equations Practice solving equations in one step by adding or subtracting the same value from both sides. Scott Menke exercise https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-one-step-add-sub-equations/e/one-step-add-sub-equations-2 2025-02-10T05:04:39.155459793Z One-step addition & subtraction equations: fractions & decimals Practice solving equations in one step by adding or subtracting a number from both sides. These problems involve decimals and fractions. Ben exercise https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-one-step-add-sub-equations/a/solving-one-step-addition-and-subtraction-equations 2021-06-30T17:51:07Z One-step addition & subtraction equations Learn to solve equations like "x + 3 = 9" or "y  - 5 = 8". article https://www.khanacademy.org/math/class-7-ncf/x063f95a40c290960:finding-the-unknown/x063f95a40c290960:solving-an-equation/v/one-step-multiplication-equations 2025-06-11T12:53:03.642274817Z One-step multiplication equations In this math lesson, we learn to solve equations with x divided by a number, like x/3 = 14. To find x, we isolate it by multiplying both sides of the equation by the divisor (3). This gives us x = 42. Finally, we check our answer by substituting x back into the original equation to make sure it is correct. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw One-step multiplication equations In this math lesson, we learn to solve equations with x divided by a number, like x/3 = 14. To find x, we isolate it by multiplying both sides of the equation by the divisor (3). This gives us x = 42. Finally, we check our answer by substituting x back into the original equation to make sure it is correct. https://cdn.kastatic.org/ka-youtube-converted/xST3m6zHPKA.mp4/xST3m6zHPKA.mp4 150 Finding the Unknown https://www.khanacademy.org/math/6th-grade-illustrative-math/unit-6-expressions-and-equations/lesson-4-practice-solving-equations-and-representing-situations-with-equations/v/one-step-division-equations 2025-06-11T12:53:03.642274817Z One-step division equations In this lesson, we learn how to solve simple algebraic equations systematically. We focus on understanding the meaning of equations, like 7x = 14, and using techniques like dividing both sides of the equation by the coefficient to isolate the variable. This method helps us find the value of the unknown variable, making algebra easier and more approachable. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw One-step division equations In this lesson, we learn how to solve simple algebraic equations systematically. We focus on understanding the meaning of equations, like 7x = 14, and using techniques like dividing both sides of the equation by the coefficient to isolate the variable. This method helps us find the value of the unknown variable, making algebra easier and more approachable. https://cdn.kastatic.org/ka-youtube-converted/WhsOJtZazS8.mp4/WhsOJtZazS8.mp4 618 Finding the Unknown https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-one-step-mult-div-equations/e/linear_equations_1 2026-02-18T21:10:37.070672468Z One-step multiplication & division equations Practice solving equations in one step by multiplying or dividing a value from both sides. Marcia Lee exercise https://www.khanacademy.org/math/revision-mh-math-class-6/x01cb2212e31ce997:decimal-fractions/x01cb2212e31ce997:equations/v/one-step-multiplication-division-equations-fractions-decimals-indian-accent 2025-06-05T06:01:43.515132284Z One-step multiplication & division equations: fractions & decimals In this fun math adventure, we tackle equations with fractions and decimals. We learn to balance equations by applying the same operation on both sides, simplifying fractions, and eliminating decimals. It's a step-by-step journey to mastering algebra! Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw One-step multiplication & division equations: fractions & decimals In this fun math adventure, we tackle equations with fractions and decimals. We learn to balance equations by applying the same operation on both sides, simplifying fractions, and eliminating decimals. It's a step-by-step journey to mastering algebra! https://cdn.kastatic.org/ka-youtube-converted/i-JdNDH0mqk.mp4/i-JdNDH0mqk.mp4 418 Finding the Unknown https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-one-step-mult-div-equations/e/one-step-mult-div-equations-2 2022-07-28T09:36:48.454963052Z One-step multiplication & division equations: fractions & decimals Practice solving equations in one step by multiplying or dividing a number from both sides. These problems involve decimals and fractions. Ben exercise https://www.khanacademy.org/math/class-7-ncf/x063f95a40c290960:finding-the-unknown/x063f95a40c290960:solving-an-equation/v/worked-example-two-step-equations-indian-accent 2025-06-06T15:33:38.563209632Z Worked example: two-step equations Sal solves the equation -16 = x/4 + 2. It takes two steps because he first has to subtract 2 from both sides and then multiply both sides by 4. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! (add course link here) Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Worked example: two-step equations Sal solves the equation -16 = x/4 + 2. It takes two steps because he first has to subtract 2 from both sides and then multiply both sides by 4. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! (add course link here) Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by https://cdn.kastatic.org/ka-youtube-converted/ubSQv-8ez5Q.mp4/ubSQv-8ez5Q.mp4 183 Finding the Unknown https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-variables-expressions/cc-7th-2-step-equations-intro/e/linear_equations_2 2025-12-20T00:44:23.950015857Z Two-step equations Practice solving equations that take two steps to solve. For example, solve  -16 = x/4 + 2. Ben Alpert exercise https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/pre-algebra-one-step-equation-mistakes/e/find-the-mistake-in-solving-one-step-equations 2022-07-28T13:41:08.629395114Z Find the mistake in one-step equations Practice spotting the mistake in someone else's work as they attempt to solve one-step equations. Ben exercise https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-super-yoga/e/model-with-one-step-equations-and-solve 2023-12-11T22:10:22.66384181Z Model with one-step equations and solve Practice writing basic equations to model real-world situations. Then solve for the variable. Lindsay exercise https://www.khanacademy.org/math/class-7-ncf/x063f95a40c290960:finding-the-unknown/x063f95a40c290960:mind-the-mistake-mend-the-mistake/e/v1-h6-solving-linear-equations-1 2021-10-15T21:16:58.572783132Z Solving linear equations: Level 1 exercise