Answer
$m=4$
Work Step by Step
We are given the equation $-\frac{3}{4}m=-3$. Multiply both sides by $-\frac{4}{3}$.
$(-\frac{3}{4}m\times-\frac{4}{3})=m=-3\times-\frac{4}{3}=\frac{3\times4}{3}=\frac{12}{3}=4$
Therefore, $m=4$.
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