15/z-7/z

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Solution for 15/z-7/z equation: 


D( z )

z = 0

z = 0

z = 0

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

15/z-(7/z) = 0

15/z-7*z^-1 = 0

8*z^-1 = 0 // : 8

z^-1 = 0

z należy do O

z belongs to the empty set

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