Question
Answer
$$13i-18-(-4-11i)=24i-14$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}13i-18-(-4-11i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}13i-18+4+11i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}24i-14\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( -4-11i \right) = 4+11i $$ |
| ② | Combine like terms: $$ \color{blue}{13i} \color{red}{-18} + \color{red}{4} + \color{blue}{11i} = \color{blue}{24i} \color{red}{-14} $$ |
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