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