Answer
$$3+4i+7-2i=2i+10$$
Explanation
| $$ \begin{aligned}3+4i+7-2i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}2i+10\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{3} + \color{red}{4i} + \color{blue}{7} \color{red}{-2i} = \color{red}{2i} + \color{blue}{10} $$ |
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