Tap the blue circles to see an explanation.
| $$ \begin{aligned}3\cdot(2+10)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3\cdot12 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}36\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{2} + \color{blue}{10} = \color{blue}{12} $$ |
| ② | $ 3 \cdot 12 = 36 $ |