| $$ \begin{aligned}4x-2y-2+6y& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}4x+4y-2\end{aligned} $$ | |
| ① | Combine like terms: $$ 4x \color{blue}{-2y} -2+ \color{blue}{6y} = 4x+ \color{blue}{4y} -2 $$ |