4/z=16/28

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Solution for 4/z=16/28 equation: 


D( z )

z = 0

z = 0

z = 0

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

4/z = 16/28 // - 16/28

4/z-(16/28) = 0

4/z-4/7 = 0

4*z^-1 = 4/7 // : 4

z^-1 = 1/7

-1 < 0

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

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

7 = z^1

z = 7

z = 7

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