Question
$$\frac{3}{4}x = -12$$
Answer
$$ x = -16 $$
Explanation
$$ \begin{aligned} \frac{3}{4}x &= -12&& \text{multiply ALL terms by } \color{blue}{ 4 }. \\[1 em]4 \cdot \frac{3}{4}x &= 4\cdot(-12)&& \text{cancel out the denominators} \\[1 em]3x &= -48&& \text{ divide both sides by $ 3 $ } \\[1 em]x &= -\frac{48}{3}&& \\[1 em]x &= -16&& \\[1 em] \end{aligned} $$
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