Question
Answer
$$1+2x+x=3x+1$$
Explanation
| $$ \begin{aligned}1+2x+x& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3x+1\end{aligned} $$ | |
| ① | Combine like terms: $$ 1+ \color{blue}{2x} + \color{blue}{x} = \color{blue}{3x} +1 $$ |
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