| $$ \begin{aligned}-\frac{i}{i+1}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{-1-i}{2}\end{aligned} $$ | |
| ① | Divide $ \, -i \, $ by $ \, 1+i \, $ to get $\,\, \dfrac{-1-i}{2} $. ( view steps ) |