| $$ \begin{aligned}32x+64-12& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}32x+52\end{aligned} $$ | |
| ① | Combine like terms: $$ 32x+ \color{blue}{64} \color{blue}{-12} = 32x+ \color{blue}{52} $$ |