5d-7+7d=-115

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Solution for 5d-7+7d=-115 equation: 


d in (-oo:+oo)

5*d+7*d-7 = -115 // + 115

5*d+7*d-7+115 = 0

12*d+108 = 0 // - 108

12*d = -108 // : 12

d = -108/12

d = -9

d = -9

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