u/-9+7=13

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Solution for u/-9+7=13 equation: 


u in (-oo:+oo)

u/(-9)+7 = 13 // - 13

u/(-9)-13+7 = 0

-1/9*u-6 = 0 // + 6

-1/9*u = 6 // : -1/9

u = 6/(-1/9)

u = -54

u = -54

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