r/-9=-8

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Solution for r/-9=-8 equation: 


r in (-oo:+oo)

r/(-9) = -8 // + 8

r/(-9)+8 = 0

8-1/9*r = 0 // - 8

-1/9*r = -8 // : -1/9

r = -8/(-1/9)

r = 72

r = 72

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