3+18/z=12

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Solution for 3+18/z=12 equation: 


D( z )

z = 0

z = 0

z = 0

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

18/z+3 = 12 // - 12

18/z-12+3 = 0

18*z^-1 = 9 // : 18

z^-1 = 1/2

-1 < 0

1/(z^1) = 1/2 // * z^1

1 = 1/2*z^1 // : 1/2

2 = z^1

z = 2

z = 2

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