Answer
$$8x-20x=-12x$$
Explanation
| $$ \begin{aligned}8x-20x& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-12x\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{8x} \color{blue}{-20x} = \color{blue}{-12x} $$ |
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