13-09-2018
Mathematics

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13-09-2018

Linear Pair = Supplementary angles = angles equal 180

180=(3n+15)+(2n+40)

Condense

180= 5n+55

Subtract

125=5n

Divide

n=25

Plug back in

3(25)+15 =90

2(25)+40=90

Both answers are 90 degrees.

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