Question

Angle X and Y are supplementary. The measure of the angle X is 19° less than 2 times the measure of angle Y. What is the

measure of angle x?

Answer 1

Supplementary angles add up to 180 degrees. The key phrase "less than" signifies you are going to subtract angle X from angle Y. Angle Y is 2 times the measure of angle X so you are going to multiply Y by 2. So right now you should have the equation 2y - 19 = 180. Then, plug it in. Add 19 to 180 to move it to the other side and then divide by 2.