Two angles are supplementary. If one measures x and the other angle measures x + 30, what is the value of x?

The measure of x would be 30

Answer: x = 75

Remember: supplementary angles add up to 180°.

Form your equation.

x + x + 30 = 180

Solve for x.

x + x + 30 = 180 Combine like terms

2x + 30 = 180 Subtract 30 from both sides

2x = 150 Divide by 2 to both sides

x = 75 Answer!