SOLUTION: Two angles are supplementary. If the m∠A is five times the sum of the m∠B plus 7.2°, what is m∠B?

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Question 1080878: Two angles are supplementary. If the m∠A is five times the sum of the m∠B plus 7.2°, what is m∠B?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
A=5%28B%2B7.2%29
and
A%2BB=180
Substituting,
5%28B%2B7.2%29%2BB=180
5B%2B36%2BB=180
6B=144
Solve for B, then use either equation to solve for A.