https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-writing-expressions/v/writing-expressions-1 2022-11-16T04:22:43.7414897Z 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. Sal Khan video https://cdn.kastatic.org/googleusercontent/pRt19bWADSJyWDO06iwdyaRKQuUD-AAqqt7FXAacZ_w8NxHZ2zEAu4DNIRJdUIpTxqL_66jJGM3pvfowqwBt_iQB 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/Q1vMNyIP4Us.mp4/Q1vMNyIP4Us.mp4 98 Simple equations https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-one-step-add-sub-equations/v/solving-one-step-equations 2023-06-30T02:13:42.781179102Z 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. Sal Khan video https://cdn.kastatic.org/googleusercontent/CBzV-J8wwF1KnWpx77vHD-SHURxGgg_r2gqlSdqqWk51Kxvd6lyyjwDAjPA8JVeHUbCfkvayrZyAFb9bQhEwP2Al 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/VidnbCEOGdg.mp4/VidnbCEOGdg.mp4 114 Simple equations https://www.khanacademy.org/math/ka-math-class-7/x26f4f4b84655c15c:simple-equations-ncert-new/x26f4f4b84655c15c:more-equations/v/transposing-a-number-in-equation 2024-12-27T06:21:45.961878322Z Transposing a number in equation Simple equations with one variable needs a collection of variables on one side and collection of constants on other side of equal sign. In this video we dive into the concept of moving constant values from one side to other, while changing its sign. Which is also called transposing of a number. Devashish Phadnis video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Transposing a number in equation Simple equations with one variable needs a collection of variables on one side and collection of constants on other side of equal sign. In this video we dive into the concept of moving constant values from one side to other, while changing its sign. Which is also called transposing of a number. https://cdn.kastatic.org/ka-youtube-converted/oYB_ADA3hDY.mp4/oYB_ADA3hDY.mp4 273 Simple equations 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 Simple equations https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-variables-expressions/cc-7th-linear-eq-word-probs/v/basic-linear-equation-word-problem 2021-07-02T09:35:26Z Two-step equation word problem: computers Learn how to construct and solve a basic linear equation to solve a word problem. Sal Khan video https://cdn.kastatic.org/googleusercontent/fnhBWrzdpuKHTYoc67w5zwoceQx7GIchm2C4xM4eu2uehQafZfW5jkykpbJZrpAq0jeUwF6xqh9rESEGQmwFTceuHg Two-step equation word problem: computers Learn how to construct and solve a basic linear equation to solve a word problem. https://cdn.kastatic.org/ka-youtube-converted/roHvNNFXr4k.mp4/roHvNNFXr4k.mp4 286 Simple equations https://www.khanacademy.org/math/up-sw-revision-ncert-class-7-math/x878ebb49a453e5a0:week-1/x878ebb49a453e5a0:untitled-189/e/simple-equations-revision-ncert7 2026-04-07T23:17:37.123726494Z Simple equations revision ncert7 . Devashish Phadnis exercise