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The sum of the angle measures of any triangle is 180 degrees. Find the angle measures of a triangle if the second angle measures twice the first, and the third angle measures 15 degrees less than the second

Respuesta :

//I'll say that the first angle = x

180 = x + 2x + (2x - 15)
180 = 5x - 15
195 = 5x
x = 39

So the first angle is 39 degrees, the second angle is 78 degrees and the third angle is 63 degrees.

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