Answer
$$9-3i-4-i=-4i+5$$
Explanation
| $$ \begin{aligned}9-3i-4-i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-4i+5\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{9} \color{red}{-3i} \color{blue}{-4} \color{red}{-i} = \color{red}{-4i} + \color{blue}{5} $$ |
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