-3z/7=9

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Solution for -3z/7=9 equation: 


z in (-oo:+oo)

(-3*z)/7 = 9 // - 9

(-3*z)/7-9 = 0

-3/7*z-9 = 0 // + 9

-3/7*z = 9 // : -3/7

z = 9/(-3/7)

z = -21

z = -21

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