-7d+1=6d-77

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Solution for -7d+1=6d-77 equation: 


d in (-oo:+oo)

1-7*d = 6*d-77 // - 6*d-77

1-7*d-(6*d)+77 = 0

1-7*d-6*d+77 = 0

78-13*d = 0 // - 78

-13*d = -78 // : -13

d = -78/(-13)

d = 6

d = 6

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