-5=2/z

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Solution for -5=2/z equation: 


D( z )

z = 0

z = 0

z = 0

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

-5 = 2/z // - 2/z

-(2/z)-5 = 0

-2*z^-1-5 = 0

-2*z^-1 = 5 // : -2

z^-1 = -5/2

-1 < 0

1/(z^1) = -5/2 // * z^1

1 = -5/2*z^1 // : -5/2

-2/5 = z^1

z = -2/5

z = -2/5

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