Simplify \(8-12\) to \(-4\).
\[\begin{aligned}&-4(16-40)\times 3\\&12(4+3)\end{aligned}\]
Simplify \(16-40\) to \(-24\).
\[\begin{aligned}&-4\times -24\times 3\\&12(4+3)\end{aligned}\]
Simplify \(4+3\) to \(7\).
\[\begin{aligned}&-4\times -24\times 3\\&12\times 7\end{aligned}\]
-4*-24*3;12*7
