Question
Answer
$$3-4i+6+7i=3i+9$$
Explanation
| $$ \begin{aligned}3-4i+6+7i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3i+9\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{3} \color{red}{-4i} + \color{blue}{6} + \color{red}{7i} = \color{red}{3i} + \color{blue}{9} $$ |
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