Question 353121
four times the measure of an angle is 7 more than three times the measure of its supplement. what is the measure of the angle?
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Two angles are supplement if the sum is 180 degrees.
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Let x = the angle
then 
180-x = supplement of angle
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4x = 3(180-x)+7
4x = 540-3x+7
7x = 540+7
7x = 547
x = 78.14 degrees