$$ \begin{aligned}3x-4y+2x-3y& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}5x-7y\end{aligned} $$ | |
① | Combine like terms: $$ \color{blue}{3x} \color{red}{-4y} + \color{blue}{2x} \color{red}{-3y} = \color{blue}{5x} \color{red}{-7y} $$ |