SOLUTION: the measures of two supplementary angles are in the ratio of 7:5. Which value is the measure of the smallest angle?

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Question 340199: the measures of two supplementary angles are in the ratio of 7:5. Which value is the measure of the smallest angle?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
We call the ratio 7x to 5x...
then 7x + 5x = 180
12x = 180
x = 15
and the angles are
105 and 75 degrees, 75 degrees being the answer...