Answer
z = $\frac{25}{2}$
Work Step by Step
$\frac{4}{5}z$ = 10
Multiply each side by the reciprocal of the coefficient, $\frac{5}{4}$:
$\frac{5}{4}(\frac{4}{5}z)$ = 10($\frac{5}{4}$)
z = $\frac{25}{2}$
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