Question
Answer
$$-9i-19-(2i+15)=-11i-34$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-9i-19-(2i+15)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-9i-19-2i-15 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-11i-34\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 2i+15 \right) = -2i-15 $$ |
| ② | Combine like terms: $$ \color{blue}{-9i} \color{red}{-19} \color{blue}{-2i} \color{red}{-15} = \color{blue}{-11i} \color{red}{-34} $$ |
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