Question
Answer
$$5i+3-(17i-5)=-12i+8$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}5i+3-(17i-5)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}5i+3-17i+5 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-12i+8\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 17i-5 \right) = -17i+5 $$ |
| ② | Combine like terms: $$ \color{blue}{5i} + \color{red}{3} \color{blue}{-17i} + \color{red}{5} = \color{blue}{-12i} + \color{red}{8} $$ |
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