Question
Answer
$$\dfrac{-21-15i}{-1-6i}=-3i+3$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}\frac{-21-15i}{-1-6i}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3-3i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-3i+3\end{aligned} $$ | |
| ① | Divide $ \, -21-15i \, $ by $ \, -1-6i \, $ to get $\,\, 3-3i $. ( view steps ) |
| ② | Combine like terms: $$ -3i+3 = -3i+3 $$ |
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