Answer
$$1-9+3+3n+5=3n$$
Explanation
| $$ \begin{aligned}1-9+3+3n+5& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3n\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{1} \color{red}{-9} + \color{green}{3} +3n+ \color{green}{5} = 3n $$ |
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Simplify Rational Expressions