Question

Two adjacent angles have a sum of 100°. The angles have measures ∠1 = 20° and ∠2 = (3x + 15)°. What equation can be used to solve for x?

angle abc: (3x+7) degrees
angle cbd: (2x+5)

Answer 1

The equation that can be used to solve for x is:

20° + (3x + 15)° = 100°