Question
Answer
$$2a\cdot3+3a\cdot2+7a+a\cdot3+a\cdot2-2a=22a$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}2a\cdot3+3a\cdot2+7a+a\cdot3+a\cdot2-2a& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}6a+6a+7a+3a \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}22a\end{aligned} $$ | |
| ① | $$ 2 a \cdot 3 = 6 a $$ |
| ② | $$ 3 a \cdot 2 = 6 a $$ Combine like terms: $$ \color{blue}{3a} + \, \color{red}{ \cancel{2a}} \, \, \color{red}{ -\cancel{2a}} \, = \color{red}{3a} $$ |
| ③ | Combine like terms: $$ \color{blue}{6a} + \color{red}{6a} + \color{green}{7a} + \color{green}{3a} = \color{green}{22a} $$ |
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