| A | B |
|---|
| numerical expression | an expression that contains only numbers & symbols |
| variable | a symbol, usually a letter, used to represent a number in an expression/equation |
| algebraic expression | an expression which contains variables and operations |
| evaluate | find the value of |
| simplify | to find an equivalent expression that is simpler than the original |
| like terms | a and 2a are both multiples of a; they are like terms |
| inequality | a mathematical statement that two expressions are not equal |
| equation | a mathematical statement that two expressions are equal |
| true | an equation is true when the expressions on both sides have same value |
| solve | to work out a solution |
