| $$ \begin{aligned}2+4i+6+i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}5i+8\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{2} + \color{red}{4i} + \color{blue}{6} + \color{red}{i} = \color{red}{5i} + \color{blue}{8} $$ |