1/9=z/7

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Solution for 1/9=z/7 equation: 


z in (-oo:+oo)

1/9 = z/7 // - z/7

1/9-(z/7) = 0

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

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

z = -1/9/(-1/7)

z = 7/9

z = 7/9

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