The core idea in algebra is using letters to represent relationships between numbers without specifying what those numbers are! Let's explore the basics of communicating in algebraic expressions.

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The word decreased is used, which means we should subtract, but we still need to be careful about which order to put the numbers in. For example, " m ‍ decreased by seven" tells us to start at m ‍ and …

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An algebraic expression like 3x can be evaluated for any value of x. Say x=4, then 3x = 3*4 = 12. In this article, we review how to evaluate algebraic expressions.

Mar 15, 2021 · What do Khan Academy’s interactive math worksheets look like? Here’s an example: What are teachers saying about Khan Academy’s interactive math worksheets? “My students love …

Learn to write expressions with variables in math! Discover how to represent various operations like addition, subtraction, multiplication, and division using variables.

In this lesson, we learned how to simplify algebraic expressions by combining like terms. We focused on understanding the intuition behind adding and subtracting coefficients of the same variables.

Mar 25, 2021 · That’s because Khan Academy has curriculums for a wide range of math courses – from kindergarten through linear algebra. And each curriculum is fully built-out with free videos, articles, …

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