40/30=34/z

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Solution for 40/30=34/z equation: 


D( z )

z = 0

z = 0

z = 0

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

40/30 = 34/z // - 34/z

40/30-(34/z) = 0

40/30-34*z^-1 = 0

-34*z^-1 = -4/3 // : -34

z^-1 = 2/51

-1 < 0

1/(z^1) = 2/51 // * z^1

1 = 2/51*z^1 // : 2/51

51/2 = z^1

z = 51/2

z = 51/2

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