Question
Answer
$$16-18i-9+19i=i+7$$
Explanation
| $$ \begin{aligned}16-18i-9+19i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}i+7\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{16} \color{red}{-18i} \color{blue}{-9} + \color{red}{19i} = \color{red}{i} + \color{blue}{7} $$ |
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