1.

Find a if one angle of a supplementry angle is 2y-20 and another is 2y+60

Answer»

2Y - 20 + 2Y + 60 = 180

4Y + 40 = 180

4Y = 180 - 40

4Y = 140

Y = 35

aNGLE = 70 - 20 = 50

another angle = 70 + 60 = 130


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