Question
Answer
$$-7-(-8+3i)=-3i+1$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-7-(-8+3i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-7+8-3i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-3i+1\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( -8+3i \right) = 8-3i $$ |
| ② | Combine like terms: $$ \color{blue}{-7} + \color{blue}{8} -3i = -3i+ \color{blue}{1} $$ |
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