Algebraic expressions using angles...help!!

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The measure of the angles supplement is 20 degrees more than three times that of its complement. Find the measure of the angle described.

May 12th, 2015

180 - x - 20 = 3(90 - x) 
160 - x = 270 - 3x 
2x = 90 
x = 45 

May 12th, 2015

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May 12th, 2015
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May 12th, 2015
Jun 23rd, 2017
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