Expressions and Equations

____________________: parts of an expression separated by + or – signs

_______: A numerical or constant quantity placed before the variable in an algebraic expression

Combination of variables, numbers, & operations that represents mathematical relationship. No =

15y = 215

55x - x + 15

a mathematical statement that two or more expressions are equal. Has an =

67x + 45 = 205

______________: part of math sentence whose value is always the same, represented by a numeral.

_______________: an unknown quantity or expression whose value can change.

5y + 6