SOLUTION: An angle measures 20 less than twice its supplement. Find the measure of the angle and its supplement?

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Question 323366: An angle measures 20 less than twice its supplement. Find the measure of the angle and its supplement?
Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
Let's have x be one of the angles. We know 180 degrees is the total of supplemental angles. So:
x+x-20=180
Combine like terms and add 20 to both sides to get:
2x=200
Divide both sides by 2 will give us:
x=100
So the angles are:
100 degrees and
80 degrees.
Got it?
RJ
www.math-unlock.com