| $$ \begin{aligned}17+15-(10+17)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}32-27 \xlongequal{ } \\[1 em] & \xlongequal{ }5\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{17} + \color{blue}{15} = \color{blue}{32} $$Combine like terms: $$ \color{blue}{10} + \color{blue}{17} = \color{blue}{27} $$ |