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The sum of the angles of two supplementary angles is 180. one angle measures 15 more than twice the measure of the other. find the measure of each angle.

Answer :

angle a + angle b = 180
a = 2b + 15
3b + 15 = 180
3b = 180 - 15 = 165
b = 165 divided by 3 = 55
the ratio of the two angle is 2:1 as a is twice as much as b
a is 55 x 2 + 15 = 125
b is 55
125 + 55 = 180

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