SOLUTION: How do you figure out if A and B are supplementary if angle A measures 3/8x+50 and angle B measures x+31? Need to find x.

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Question 155905This question is from textbook McDougal Littel Geometry
: How do you figure out if A and B are supplementary if angle A measures 3/8x+50 and angle B measures x+31? Need to find x. This question is from textbook McDougal Littel Geometry

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
3x/8+50+x+31=180
(3x+8x)/8=180-50-31
11x/8=99
11x=8*99
11x=792
x=792/11
x=72 answer.
Proof:
3*72/8+50+72+31=180
216/8+153=180
27+153=180
180=180