-7=z/9

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Solution for -7=z/9 equation: 


z in (-oo:+oo)

-7 = z/9 // - z/9

-(z/9)-7 = 0

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

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

z = 7/(-1/9)

z = -63

z = -63

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