Two supplementary angles have the following measures: m∠ABC=135° and m∠CBD=9x° . What is the equation to solve for x ?(1 point)
The sum of the measures of two supplementary angles is 180 degrees.
Therefore, we can write the equation:
m∠ABC + m∠CBD = 180
135 + 9x = 180
Solving this equation, we find:
9x = 180 - 135
9x = 45
Dividing both sides by 9:
x = 45/9
x = 5
Therefore, the equation to solve for x is:
9x = 45.