https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-solving-equations/v/one-step-equation-intuition 2023-06-30T02:13:42.781179102Z One-step equations intuition In this math lesson, we learn how to solve a balance scale problem with unknown mass. We represent the problem using an algebraic equation, 3x = 9, where x is the unknown mass. By dividing both sides by 3, we find that x = 3, meaning each object has a mass of 3 kilograms. Sal Khan video https://cdn.kastatic.org/googleusercontent/hNkL2m5CQTMTDzu21O9aByC7pPGy8aeBQt0Pd4f6iIru01VsOFpn0Gr74JXY9i-vAimlRgF7ZQwhQTIyMVZC0QX7 One-step equations intuition In this math lesson, we learn how to solve a balance scale problem with unknown mass. We represent the problem using an algebraic equation, 3x = 9, where x is the unknown mass. By dividing both sides by 3, we find that x = 3, meaning each object has a mass of 3 kilograms. https://cdn.kastatic.org/ka-youtube-converted/kbqO0YTUyAY.mp4/kbqO0YTUyAY.mp4 279 Solving equations 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 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/cc-seventh-grade-math/cc-7th-variables-expressions/cc-8th-two-step-equations-dec-frac/e/find-the-mistake-two-step-equations 2024-06-28T15:10:04.95206947Z Find the mistake: two-step equations Practice spotting the mistake in someone else's work as they attempt to solve two-step equations. Common mistakes include distributing incompletely and not performing the same operation on both sides of the equation. Ben exercise