2(-2+7d)=-144

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Solution for 2(-2+7d)=-144 equation: 


d in (-oo:+oo)

2*(7*d-2) = -144 // + 144

2*(7*d-2)+144 = 0

2*(7*d-2)+144 = 0

14*d+140 = 0

14*d+140 = 0

14*d+140 = 0 // - 140

14*d = -140 // : 14

d = -140/14

d = -10

d = -10

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