Answer
$$-2(6x-6)-5=-12x+7$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-2(6x-6)-5& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-(12x-12)-5 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-12x+12-5 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}-12x+7\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{2} $ by $ \left( 6x-6\right) $ $$ \color{blue}{2} \cdot \left( 6x-6\right) = 12x-12 $$ |
| ② | Remove the parentheses by changing the sign of each term within them. $$ - \left(12x-12 \right) = -12x+12 $$ |
| ③ | Combine like terms: $$ -12x+ \color{blue}{12} \color{blue}{-5} = -12x+ \color{blue}{7} $$ |
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