SOLUTION: if two complementary angles have a measure of x-9 and 3x+15, the smaller angle has a measure of ?

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Question 825733: if two complementary angles have a measure of x-9 and 3x+15, the smaller angle has a measure of ?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
(x-9)+(3x+15) = 90

x-9+3x+15 = 90

4x+6 = 90

4x = 90-6

4x = 84

x = 84/4

x = 21

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x-9 = 21 - 9 = 12

3x+15 = 3*21+15 = 78

So the smaller angle is 12 degrees