-d+7=7d+47

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Solution for -d+7=7d+47 equation: 


d in (-oo:+oo)

7-d = 7*d+47 // - 7*d+47

7-d-(7*d)-47 = 0

7-d-7*d-47 = 0

-8*d-40 = 0 // + 40

-8*d = 40 // : -8

d = 40/(-8)

d = -5

d = -5

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