# 12.5: Single Variable Addition Equations

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**Practice**Single Variable Addition Equations

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Difference

The result of a subtraction operation is called a difference.Expression

An expression is a mathematical phrase containing variables, operations and/or numbers. Expressions do not include comparative operators such as equal signs or inequality symbols.Inverse

Inverse operations are operations that "undo" each other. Multiplication is the inverse operation of division. Addition is the inverse operation of subtraction.Simplify

To simplify means to rewrite an expression to make it as "simple" as possible. You can simplify by removing parentheses, combining like terms, or reducing fractions.Sum

The sum is the result after two or more amounts have been added together.### Image Attributions

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Learn to solve single variable addition equation.

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Date Created:

Oct 29, 2012
Last Modified:

Sep 04, 2016
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