-7d+7=2d+79

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Solution for -7d+7=2d+79 equation: 


d in (-oo:+oo)

7-7*d = 2*d+79 // - 2*d+79

7-7*d-(2*d)-79 = 0

7-7*d-2*d-79 = 0

-9*d-72 = 0 // + 72

-9*d = 72 // : -9

d = 72/(-9)

d = -8

d = -8

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