SOLUTION: If an angle is 20 degrees less than thrice its supplement, find the ratio of the angle to its supplement. Thank you! :)

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Question 990743: If an angle is 20 degrees less than thrice its supplement, find the ratio of the angle to its supplement. Thank you! :)
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x, the unknown angle measure;
180-x, the supplement of x;
x=-20%2B3%28180-x%29, the description transcribed into an equation.

SOLUTION STEPS
x=3%2A180-3x-20
x%2B3x=3%2A180-20
4x=3%2A180-20
x=3%2A45-5
highlight%28x=130%29

Steps can vary as long as correct operations on both sides are followed.