Elementary Algebra

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Variable

What Is a Variable?

In algebra we use symbols, like $a$ , $b$ , $c$ , in place of numbers. These symbols are known as variables. Watch this video to learn more about variables.

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Algebraic Expression

Combining like Terms

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Subtracting Variables

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Adding and Subtracting Unlike Terms

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Multiplying Numbers by Coefficients

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Combining Variables with Exponents

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Replacing a Variable with a Number

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