Answer
$$-7-10i-4+2i=-8i-11$$
Explanation
| $$ \begin{aligned}-7-10i-4+2i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-8i-11\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{-7} \color{red}{-10i} \color{blue}{-4} + \color{red}{2i} = \color{red}{-8i} \color{blue}{-11} $$ |
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