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# 2.1: Equations with Variables on One Side

Difficulty Level: Advanced Created by: CK-12
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Practice One-Step Equations and Inverse Operations

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### Vocabulary Language: English

constant

A constant is a value that does not change. In Algebra, this is a number such as 3, 12, 342, etc., as opposed to a variable such as x, y or a.

Equation

An equation is a mathematical sentence that describes two equal quantities. Equations contain equals signs.

Numerical Coefficient

In mathematical expressions, the numerical coefficients are the numbers associated with the variables. For example, in the expression $4x$, 4 is the numerical coefficient and $x$ is the variable.

Variable

A variable is a symbol used to represent an unknown or changing quantity. The most common variables are a, b, x, y, m, and n.

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Date Created:
Apr 30, 2013
Aug 16, 2016
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MAT.ALG.220.L.4