-9+d=7d+51

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Solution for -9+d=7d+51 equation: 


d in (-oo:+oo)

d-9 = 7*d+51 // - 7*d+51

d-(7*d)-51-9 = 0

d-7*d-51-9 = 0

-6*d-60 = 0 // + 60

-6*d = 60 // : -6

d = 60/(-6)

d = -10

d = -10

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