− 135
Answer: D: 9x = 180 − 135
Two supplementary angles are ∠ABC=135° and ∠CBD=9x°. What is the equation to solve for x
A: 9x + 135 = 90
B: 9x + 135 = 180
C: 9x − 135 = 180
D: 9x = 180
5 answers
did you mean c
The answer is B
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