| $$ \begin{aligned}6(8v+8)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}48v+48\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{6} $ by $ \left( 8v+8\right) $ $$ \color{blue}{6} \cdot \left( 8v+8\right) = 48v+48 $$ |