Question
Answer
$$6+4i-(2-6i)-7=10i-3$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}6+4i-(2-6i)-7& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}6+4i-2+6i-7 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}10i-3\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 2-6i \right) = -2+6i $$ |
| ② | Combine like terms: $$ \color{blue}{6} + \color{red}{4i} \color{green}{-2} + \color{red}{6i} \color{green}{-7} = \color{red}{10i} \color{green}{-3} $$ |
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