# THS Pre-Algebra Chapter 4

## 15 terms · Expressions and Equations

### Distributive Property

To multiply a sum by a number, multiply each number in parentheses by the number outside the parentheses

### Equivalent Expressions

Expressions that have the same value

### Coefficient

The numerical part of a term that contains a variable

### Constant

A term without a variable.

### Like Terms

Expressions that contain the same power, such as 2n and 5n

### Term

When plus or minus signs separate an algebraic expression into parts, each part is a term.

### Simplest Form

An algebraic expression in simplest form, has no like terms and no parentheses

### Simplifying the Expression

To use distribution to combine like terms

### Equation

A mathematical sentence that contains an equal sign (=)

### Equivalent Equations

Two or more equations with the same solution

### Inverse Operations

Operation that undoes another, such as addition or subtraction

### Solution

A value for the variable that makes an equation true.

### Solving the Equation

The process of finding a solution

### Two-Step Equations

An equation that contains two operation

### Algebraic Expression

An expression that contains sums and/or products of variables and numbers

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