Question
Answer
$$-(3x+4)-(3x+4)=-6x-8$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-(3x+4)-(3x+4)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-3x-4-(3x+4) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-3x-4-3x-4 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}-6x-8\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left(3x+4 \right) = -3x-4 $$ |
| ② | Remove the parentheses by changing the sign of each term within them. $$ - \left( 3x+4 \right) = -3x-4 $$ |
| ③ | Combine like terms: $$ \color{blue}{-3x} \color{red}{-4} \color{blue}{-3x} \color{red}{-4} = \color{blue}{-6x} \color{red}{-8} $$ |
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