2d-3+7d=-30

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Solution for 2d-3+7d=-30 equation: 


d in (-oo:+oo)

2*d+7*d-3 = -30 // + 30

2*d+7*d-3+30 = 0

9*d+27 = 0 // - 27

9*d = -27 // : 9

d = -27/9

d = -3

d = -3

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