Question
Answer
$$2+3(7s+2)=21s+8$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}2+3(7s+2)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}2+21s+6 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}21s+8\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{3} $ by $ \left( 7s+2\right) $ $$ \color{blue}{3} \cdot \left( 7s+2\right) = 21s+6 $$ |
| ② | Combine like terms: $$ \color{blue}{2} +21s+ \color{blue}{6} = 21s+ \color{blue}{8} $$ |
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