Question 625538
The measure of an angle’s supplement is 30 degrees more than three times the measure of its complement.  What is the measure of the angle?
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Let x = the angle
then
90-x = complement of angle
180-x = supplement of angle
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From: "The measure of an angle’s supplement is 30 degrees more than three times the measure of its complement."
180-x = 3(90-x) + 30
180-x = 270-3x + 30
180-x = 300-3x
2x = 120
x = 60 degrees