-7=y/9

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Solution for -7=y/9 equation: 


y in (-oo:+oo)

-7 = y/9 // - y/9

-(y/9)-7 = 0

-1/9*y-7 = 0 // + 7

-1/9*y = 7 // : -1/9

y = 7/(-1/9)

y = -63

y = -63

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