Question
Answer
$$-5i-16i=-21i$$
Explanation
| $$ \begin{aligned}-5i-16i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-21i\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{-5i} \color{blue}{-16i} = \color{blue}{-21i} $$ |
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