Question
Answer
$$6i-5-(2-3i)=9i-7$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}6i-5-(2-3i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}6i-5-2+3i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}9i-7\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 2-3i \right) = -2+3i $$ |
| ② | Combine like terms: $$ \color{blue}{6i} \color{red}{-5} \color{red}{-2} + \color{blue}{3i} = \color{blue}{9i} \color{red}{-7} $$ |
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