| $$ \begin{aligned}7y+6+3v+6v& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}9v+7y+6\end{aligned} $$ | |
| ① | Combine like terms: $$ 7y+6+ \color{blue}{3v} + \color{blue}{6v} = \color{blue}{9v} +7y+6 $$ |