Question
Answer
$$-19-11i-(-17i+15)=6i-34$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-19-11i-(-17i+15)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-19-11i+17i-15 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}6i-34\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( -17i+15 \right) = 17i-15 $$ |
| ② | Combine like terms: $$ \color{blue}{-19} \color{red}{-11i} + \color{red}{17i} \color{blue}{-15} = \color{red}{6i} \color{blue}{-34} $$ |
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