Question
Answer
$$-2s\cdot2-11s-6-(14s\cdot2+5)=-43s-11$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-2s\cdot2-11s-6-(14s\cdot2+5)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-4s-11s-6-(28s+5) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-15s-6-(28s+5) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}-15s-6-28s-5 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle4}{\textcircled {4}} } }}}-43s-11\end{aligned} $$ | |
| ① | $$ 2 s \cdot 2 = 4 s $$$$ 14 s \cdot 2 = 28 s $$ |
| ② | Combine like terms: $$ \color{blue}{-4s} \color{blue}{-11s} -6 = \color{blue}{-15s} -6 $$ |
| ③ | Remove the parentheses by changing the sign of each term within them. $$ - \left( 28s+5 \right) = -28s-5 $$ |
| ④ | Combine like terms: $$ \color{blue}{-15s} \color{red}{-6} \color{blue}{-28s} \color{red}{-5} = \color{blue}{-43s} \color{red}{-11} $$ |
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