-3d+1=7

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Solution for -3d+1=7 equation: 


d in (-oo:+oo)

1-3*d = 7 // - 7

1-3*d-7 = 0

-3*d-6 = 0 // + 6

-3*d = 6 // : -3

d = 6/(-3)

d = -2

d = -2

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