Answer
$$x\cdot2+6x\cdot2-4=14x-4$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}x\cdot2+6x\cdot2-4& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}2x+12x-4 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}14x-4\end{aligned} $$ | |
| ① | $$ 6 x \cdot 2 = 12 x $$ |
| ② | Combine like terms: $$ \color{blue}{2x} + \color{blue}{12x} -4 = \color{blue}{14x} -4 $$ |
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