-12/z=-3

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Solution for -12/z=-3 equation: 


D( z )

z = 0

z = 0

z = 0

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

-12/z = -3 // + 3

3-12/z = 0

-12*z^-1 = -3 // : -12

z^-1 = 1/4

-1 < 0

1/(z^1) = 1/4 // * z^1

1 = 1/4*z^1 // : 1/4

4 = z^1

z = 4

z = 4

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