## Key Concepts

**Combine like terms.**- Identify like terms.
- Rearrange the expression so like terms are together.
- Add the coefficients of the like terms

## Glossary

**term**- A term is a constant or the product of a constant and one or more variables.

**coefficient**- The constant that multiplies the variable(s) in a term is called the coefficient.

**like terms**- Terms that are either constants or have the same variables with the same exponents are like terms.

**evaluate**- To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number.