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Posted by Anonymous on Tuesday, March 16, 2010 at 3:48pm.

Simplify the complex fraction m^-1+z^-1 _________ m^-1- z^-1

= (1/m + 1/z)/(1/m - 1/z) = [(z+m)/(mz)]/[(z-m)/zm] = (z+m)/(z-m)

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