Answer
$z=-8$
Work Step by Step
$\frac{z}{4}=-8-(-6)$ $\longrightarrow$combine like terms
$\frac{z}{4}=-2$ $\longrightarrow$multiplication property
$\frac{z}{4}\times4=-2\times4$ $\longrightarrow$simplify
$z=-8$
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