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