| $$ \begin{aligned}x+\frac{3}{4}\cdot3\frac{x-6}{3}x& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}(1+\frac{3}{4}\cdot3\frac{x-6}{3})x\end{aligned} $$ | |
| ① | Use the distributive property. |