$$ \begin{aligned}-136.68+271.12j-197.01-185.01j& \xlongequal{ }-136.68+271j-197.01-185j \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}86j-333\end{aligned} $$ | |
① | Combine like terms: $$ \color{blue}{-136} + \color{red}{271j} \color{blue}{-197} \color{red}{-185j} = \color{red}{86j} \color{blue}{-333} $$ |