r/-7=91

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Solution for r/-7=91 equation: 


r in (-oo:+oo)

r/(-7) = 91 // - 91

r/(-7)-91 = 0

-1/7*r-91 = 0 // + 91

-1/7*r = 91 // : -1/7

r = 91/(-1/7)

r = -637

r = -637

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