$$ \begin{aligned}6-3i+4-2i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-5i+10\end{aligned} $$ | |
① | Combine like terms: $$ \color{blue}{6} \color{red}{-3i} + \color{blue}{4} \color{red}{-2i} = \color{red}{-5i} + \color{blue}{10} $$ |