| $$ \begin{aligned}\frac{3i}{3i+1}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{9+3i}{10}\end{aligned} $$ | |
| ① | Divide $ \, 3i \, $ by $ \, 1+3i \, $ to get $\,\, \dfrac{9+3i}{10} $. ( view steps ) |