https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-intro-equations/v/variables-expressions-and-equations 2023-06-30T02:13:42.781179102Z Variables, expressions, & equations In algebra, we use variables like x, y, and z to represent unknown values. Expressions are combinations of variables and numbers, while equations equate two expressions. Variables can take on different values depending on the context, and we can evaluate expressions by substituting values for the variables. Sal Khan video https://cdn.kastatic.org/googleusercontent/sjn6uuCg_VMBvqgKVdjnKMqrR0Ck6JEoDLwedxMk2E6WGPQzU00r5oY68BHBihk__NPNIC-e29cRLty1sTKrmxEMcA Variables, expressions, & equations In algebra, we use variables like x, y, and z to represent unknown values. Expressions are combinations of variables and numbers, while equations equate two expressions. Variables can take on different values depending on the context, and we can evaluate expressions by substituting values for the variables. https://cdn.kastatic.org/ka-youtube-converted/vDqOoI-4Z6M.mp4/vDqOoI-4Z6M.mp4 415 Linear Equations in One Variable https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-variables-expressions/cc-7th-2-step-equations-intro/v/solving-equations-1 2021-07-02T09:35:26Z 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. Sal Khan video https://cdn.kastatic.org/googleusercontent/QiQDNq5ahsYhEPD2KUZf0gHE_x7EOwZEYq-Ys14iWgUO6WfMFybttVgho_KS2aRfNTpI0sPMGmDqImTBt7u7pEQ 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. https://cdn.kastatic.org/ka-youtube-converted/p5e5mf_G3FI.mp4/p5e5mf_G3FI.mp4 184 Linear Equations in One Variable https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:solve-equations-inequalities/x2f8bb11595b61c86:linear-equations-variables-both-sides/v/equations-3 2023-09-21T22:20:18.864150437Z Intro to equations with variables on both sides Learn how to solve the equation 2x + 3 = 5x - 2 with the variable on both sides. We start by visualizing the equation, then isolate the variable by performing the same operations on both sides. Finally, we solve the equation to find the value of the variable. Sal Khan video https://cdn.kastatic.org/googleusercontent/bSvSLNTpzUk-WzbidKWo7Ovl-30QAFH5PaF4eubV3eauWGqOHslKdokFcpc2EZlXrzIBgmUsvrTXwqFPAVbeWy_LMg Intro to equations with variables on both sides Learn how to solve the equation 2x + 3 = 5x - 2 with the variable on both sides. We start by visualizing the equation, then isolate the variable by performing the same operations on both sides. Finally, we solve the equation to find the value of the variable. https://cdn.kastatic.org/ka-youtube-converted/f15zA0PhSek.mp4/f15zA0PhSek.mp4 533 Linear Equations in One Variable https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:solve-equations-inequalities/x2f8bb11595b61c86:linear-equations-variables-both-sides/v/solving-equations-2 2023-09-21T22:20:18.864150437Z 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. Sal Khan video https://cdn.kastatic.org/googleusercontent/NW5p7h7ViFUcsKGBcschM9zdOmYIHqwvwvhrnLn_p7sn_hV-eutPUtfFTyfpU-kL1y8Zbgg9jQAxw5SmqkED2LEj_A 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. https://cdn.kastatic.org/ka-youtube-converted/1c5HY3z4k8M.mp4/1c5HY3z4k8M.mp4 246 Linear Equations in One Variable https://www.khanacademy.org/math/revision-ncert-class-8-math/x46f3ddd31448eca8:week-1/x46f3ddd31448eca8:linear-equations-in-one-variable/e/revision-linear-equations-in-one-variable-ncert-math-class-8 2025-02-07T08:24:45.557484074Z Revision Linear Equations in One Variable . Aakash Bagga exercise