Two supplementary angles have the following measures: m/ABC = 135° and m/CBD = 9x°. What is the equation to solve
for x? (1 point)
O 9x + 135° = 90°
9x135° = 180°
9x = 180°
9x + 135° 180°
1 answer
The equation to solve for x is 9x + 135° = 180°.