Question
-3 (a - 6) = 24
✓
Answer
$\begin{aligned} & -3(a-6)=24 \\ & \Rightarrow-3 a+18=24 \\ & \Rightarrow-3 a=24-18=6 \\ & \Rightarrow a=\frac{6}{-3}=-2 \\ & \therefore a=-2\end{aligned}$
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