Question
Answer
$$-2(x+6)-2x=-4x-12$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-2(x+6)-2x& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-(2x+12)-2x \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-2x-12-2x \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}-4x-12\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{2} $ by $ \left( x+6\right) $ $$ \color{blue}{2} \cdot \left( x+6\right) = 2x+12 $$ |
| ② | Remove the parentheses by changing the sign of each term within them. $$ - \left(2x+12 \right) = -2x-12 $$ |
| ③ | Combine like terms: $$ \color{blue}{-2x} -12 \color{blue}{-2x} = \color{blue}{-4x} -12 $$ |
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