$$ \begin{aligned}12x+10-2x-8& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}10x+2\end{aligned} $$ | |
① | Combine like terms: $$ \color{blue}{12x} + \color{red}{10} \color{blue}{-2x} \color{red}{-8} = \color{blue}{10x} + \color{red}{2} $$ |