| $$ \begin{aligned}\frac{9+3i}{7+i}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{33+6i}{25}\end{aligned} $$ | |
| ① | Divide $ \, 9+3i \, $ by $ \, 7+i \, $ to get $\,\, \dfrac{33+6i}{25} $. ( view steps ) |