Question
Answer
$$-8i-7i=-15i$$
Explanation
| $$ \begin{aligned}-8i-7i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-15i\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{-8i} \color{blue}{-7i} = \color{blue}{-15i} $$ |
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