| $$ \begin{aligned}4+14-4i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-4i+18\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{4} + \color{blue}{14} -4i = -4i+ \color{blue}{18} $$ |