| $$ \begin{aligned}5x+2+3x& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}8x+2\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{5x} +2+ \color{blue}{3x} = \color{blue}{8x} +2 $$ |