\(7x\left(x-2\right)=x-2\)
\(\Leftrightarrow7x\left(x-2\right)-\left(x-2\right)=0\)
\(\Leftrightarrow\left(x-2\right)\left(7x-1\right)=0\)
\(\Rightarrow\orbr{\begin{cases}x-2=0\\7x-1=0\end{cases}\Rightarrow\orbr{\begin{cases}x=2\\x=\frac{1}{7}\end{cases}}}\)
7x(x-2) = (x-2)
<=> 7x(x-2) - (x-2) = 0
<=> (x-2)(7x-1) = 0
<=> \(\hept{\begin{cases}x-2=0\\7x-1=0\end{cases}}\) <=> \(\hept{\begin{cases}x=2\\x=\frac{1}{7}\end{cases}}\)