Question
Answer
$$i+7i-9=8i-9$$
Explanation
| $$ \begin{aligned}i+7i-9& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}8i-9\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{i} + \color{blue}{7i} -9 = \color{blue}{8i} -9 $$ |
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