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 Solving Equations Systematically 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 Solving Equations Systematically 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 Solving Equations Systematically 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 Solving Equations Systematically 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 Solving Equations Systematically 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 Solving Equations Systematically 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 Solving Equations Systematically 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 Solving Equations Systematically 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