$$ \begin{aligned} 5-3(w+4) &= w-7&& \text{simplify left side} \\[1 em]5-(3w+12) &= w-7&& \\[1 em]5-3w-12 &= w-7&& \\[1 em]-3w-7 &= w-7&& \text{move the $ \color{blue}{ w } $ to the left side and $ \color{blue}{ -7 }$ to the right} \\[1 em]-3w-w &= -7+7&& \text{simplify left and right hand side} \\[1 em]-4w &= 0&& \text{ divide both sides by $ -4 $ } \\[1 em]w &= \frac{0}{-4}&& \\[1 em]w &= 0&& \\[1 em] \end{aligned} $$

This page was created using