Question

If 3x+18° and 2x+25° are supplementary, find the value of x.

Answer 1

3x + 18 + 2x + 25 = 180
5x + 43 = 180
5x = 180 - 43
5x = 137
x = 137/5
x = 27.4

Answer 2

=Sum of two supplementary angles=180°

3x+18+2x+25=180

5x+43=180

5x=180-43

5x=137

x=137/5 =27.4

Therefore,x=27.4

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