Question
Answer
$$8i+5-(6i-4)=2i+9$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}8i+5-(6i-4)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}8i+5-6i+4 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}2i+9\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 6i-4 \right) = -6i+4 $$ |
| ② | Combine like terms: $$ \color{blue}{8i} + \color{red}{5} \color{blue}{-6i} + \color{red}{4} = \color{blue}{2i} + \color{red}{9} $$ |
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