Equations

a number unchanged by variables

a mathematical statement composed of two equivalent expressions

Two expressions that are not equal.

To solve an expression or equation.

parts of an algebraic expression separated by the plus or minus sign

operations that undo each other, opposite operations

a value that makes an equation or inequality true.

To get a variable alone on one side of the equation in order to solve the equation.

a variable that depends on other factors for its value.

a number that is followed by a variable.