7/z-4=8

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Solution for 7/z-4=8 equation: 


D( z )

z = 0

z = 0

z = 0

z in (-oo:0) U (0:+oo)

7/z-4 = 8 // - 8

7/z-8-4 = 0

7*z^-1 = 12 // : 7

z^-1 = 12/7

-1 < 0

1/(z^1) = 12/7 // * z^1

1 = 12/7*z^1 // : 12/7

7/12 = z^1

z = 7/12

z = 7/12

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