Answer
$\frac{-x-z-3}{xy^{2}z}$
Work Step by Step
Given : $\frac{2-x}{xy^{2}z} - \frac{5+z}{xy^{2}z}$
This becomes : $\frac{2-x-(5+z)}{xy^{2}z}$
(Since they both have the same denominator)
$= \frac{-x-z-3}{xy^{2}z}$
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