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 Linear equations in one variable 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 Linear equations in one variable https://www.khanacademy.org/math/ka-math-class-7/x26f4f4b84655c15c:simple-equations-ncert-new/x26f4f4b84655c15c:applications-of-simple-equations-to-practical-situations/v/two-step-equation-word-problem-garden-indian-accent 2025-06-09T17:01:58.4697768Z Two-step equation word problem: garden Here's a nifty word problem in which we find the dimensions of a garden given only the perimeter. Let's create an equation to solve! 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 Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Two-step equation word problem: garden Here's a nifty word problem in which we find the dimensions of a garden given only the perimeter. Let's create an equation to solve! 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/8vLw3RxL0Rs.mp4/8vLw3RxL0Rs.mp4 121 Linear equations in one variable https://www.khanacademy.org/math/algebra-1-eureka-squared-aligned/x15446f63b23e2a07:expressions-equations-and-inequalities-in-one-variable/x15446f63b23e2a07:solving-linear-equations-in-one-variable/v/equations-with-variables-on-both-sides-20-7x6x-6-indian-accent 2025-06-08T17:06:50.364590398Z Equations with variables on both sides: 20-7x=6x-6 Solving equations like 20 - 7x = 6x - 6 with the variable on both sides involves a few steps! First, we add or subtract terms from both sides to separate constants and variables to different sides of the equation. Then, we simplify to isolate the variable. Finally, we check our answer by plugging it back into the original equation. 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 Equations with variables on both sides: 20-7x=6x-6 Solving equations like 20 - 7x = 6x - 6 with the variable on both sides involves a few steps! First, we add or subtract terms from both sides to separate constants and variables to different sides of the equation. Then, we simplify to isolate the variable. Finally, we check our answer by plugging it back into the original equation. 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/0ftMWNI7UGk.mp4/0ftMWNI7UGk.mp4 246 Linear equations in one variable https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:systems-of-equations/x2f8bb11595b61c86:systems-of-equations-word-problems/v/ex-1-age-word-problem 2021-02-07T17:14:00Z Age word problem: Arman & Diya Sal solves the following age word problem: Arman is 18. Diya is 2. How many years will it take for Arman to be 3 times as old as Diya? Sal Khan video https://cdn.kastatic.org/googleusercontent/N0lKi43uDDy6tY2gpiZUcvXKKgePhLF4Ay0B1ZY-m3gjRo-etb9j2WBH44U1dFOIXGIAIccqjyfBaOYUi5U_IsPY Age word problem: Arman & Diya Sal solves the following age word problem: Arman is 18. Diya is 2. How many years will it take for Arman to be 3 times as old as Diya? https://cdn.kastatic.org/ka-youtube-converted/W-5liMGKgHA.mp4/W-5liMGKgHA.mp4 321 Linear equations in one variable https://www.khanacademy.org/math/up-class-9-bridge/x27a9f6658c8b5c27:linear-equations-in-one-variable/x27a9f6658c8b5c27:untitled-16/v/equations-with-parentheses-indian-accent 2025-06-06T15:33:38.563209632Z Equations with parentheses When an equation such as -9 - (9x - 6) = 3(4x + 6) has parentheses, we can distribute without changing the value of each side. Then combine like terms. Next, we move all the x-terms to one side and the constants to the other. Finally, we solve for x.  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 Equations with parentheses When an equation such as -9 - (9x - 6) = 3(4x + 6) has parentheses, we can distribute without changing the value of each side. Then combine like terms. Next, we move all the x-terms to one side and the constants to the other. Finally, we solve for x.  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/OPDge0N6gT4.mp4/OPDge0N6gT4.mp4 365 Linear equations in one variable https://www.khanacademy.org/math/revision-tg-math-class-8/x9ce0e841a99d4a8a:week-1/x9ce0e841a99d4a8a:linear-equations-in-one-variable/e/revision-linear-equations-in-one-variable-tg-class-9 2026-02-18T21:20:35.275198076Z Revision linear equations in one variable TG class 8 . Khan Academy exercise