Question
Answer
$$7-8i+8i+4=11$$
Explanation
| $$ \begin{aligned}7-8i+8i+4& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}11\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{7} \, \color{red}{ -\cancel{8i}} \,+ \, \color{red}{ \cancel{8i}} \,+ \color{blue}{4} = \color{blue}{11} $$ |
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