-170=7d+7d-2

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Solution for -170=7d+7d-2 equation: 


d in (-oo:+oo)

-170 = 7*d+7*d-2 // - 7*d+7*d-2

2-(7*d)-(7*d)-170 = 0

2-7*d-7*d-170 = 0

-14*d-168 = 0 // + 168

-14*d = 168 // : -14

d = 168/(-14)

d = -12

d = -12

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