SOLUTION: What is the measure of <n is 30 deg less than its supplement. what's the measure of <n?

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Question 762943: What is the measure of
Answer by MathLover1(20850) About Me  (Show Source):
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Supplementary angles are pairs of angles that add up to 180 degrees. Thus the supplement of an angle of n degrees is an angle of %28180-+n%29 degrees.
if the measure of < n is 30 deg less than its supplement, then
n%2B30=%28180-n%29.....solve for n
n%2Bn=180+-30
2n=150
n=150%2F2
n=75
and its complement is 180+-n=180-75=105