-4=7r+1/-8

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Solution for -4=7r+1/-8 equation: 


r in (-oo:+oo)

-4 = 7*r+1/(-8) // - 7*r+1/(-8)

-(7*r)-(1/(-8))-4 = 0

1/8-7*r-4 = 0

-7*r-31/8 = 0 // + 31/8

-7*r = 31/8 // : -7

r = 31/8/(-7)

r = -31/56

r = -31/56

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