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22-08-2017
Mathematics

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An angle measures 12 degrees less than three times it's supplement. Find the measure of the angle.

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musiclover10045 musiclover10045

22-08-2017

supplementary angles = 180 degrees

so x = angle 1

y = angle 2

y = 3x-12

x + 3x-12 =180

4x-12 = 180

4x = 192

x = 192/4 = 48

y = 3(48) -12 = 144-12 = 132

132 +48 = 180

the angle is 132

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