2d-3+2d=-31 - solution

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Solution for 2d-3+2d=-31 equation:

d in (-oo:+oo)

2*d+2*d-3 = -31 // + 31

2*d+2*d-3+31 = 0

4*d+28 = 0 // - 28

4*d = -28 // : 4

d = -28/4

d = -7

d = -7

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