9/10=3/z

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Solution for 9/10=3/z equation: 


D( z )

z = 0

z = 0

z = 0

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

9/10 = 3/z // - 3/z

9/10-(3/z) = 0

9/10-3*z^-1 = 0

-3*z^-1 = -9/10 // : -3

z^-1 = 3/10

-1 < 0

1/(z^1) = 3/10 // * z^1

1 = 3/10*z^1 // : 3/10

10/3 = z^1

z = 10/3

z = 10/3

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