Question 1144238
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30 + 13x + 17x = 180  degees   (the sum of angles of any triangle)


30 + 30x = 180

30x = 180-30 = 150


x = 150/30 = 5.


The unknown angles become known now :  13*5 = 65 degrees and  17*5 = 85 degrees.
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Solved.