| A | B |
|---|
| Equation | what is on the left is equal to what is on the right |
| Variable | a symbol for a number we don't know yet |
| Constant | a number on its own |
| Coeffcient | a number used to multiply a variable |
| Operator | a symbol that represents an operation |
| Term | a single number or a variable, or numbers and variables multiplied together |
| Expression | a group of terms (separated by - + signs) |
| Like terms | terms whose variables are the same |
