| A | B |
|---|
| variable | A letter used to stand for a quantity that is unknown or that can change. |
| variable expression | An expression that contains one or more variables. |
| evaluating a variable expression | Replacing the variable or variables with numbers and then simplifying the resulting numerical expression. |
| terms | The addends of an expression. |
| variable terms | The product of a numerical coefficient and a variable. |
| constant term | A number (no variable attached). |
| numerical coefficient | The number part of a variable term. |
| like terms | Terms of a variable expression that have the same variable part. |
| simplify a variable expression | Combine like terms by adding their numerical coefficients. |
| Distributive Property | If a, b, and c are three numbers, then a(b + c) = ab + ac. |
| equation | A statement of the equality of two mathematical expressions. |
| solution of an equation | A number that, when substituted for the variable, results in a true equation. |
| solve an equation | Finding a solution of the equation. |
