SOLUTION: angle A has 3 times the measure of its supplement, angle B. What is the degree of angle A?

Question 691235: angle A has 3 times the measure of its supplement, angle B. What is the degree of angle A?
Answer by ReadingBoosters(3246) (Show Source): You can put this solution on YOUR website!
A = 3B
A + B = 180 ==> supplementary angles have a sum of 180
...
Substitution
3B + B = 180
4B = 180

...
A = 3(45) =
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