$$\left. \begin{array} { l } { \quad 8 x - ( 2 x - 1 ) = 2 } \end{array} \right.$$
$x=\frac{1}{6}\approx 0.166666667$
$$8x-2x-\left(-1\right)=2$$
$$8x-2x+1=2$$
$$6x+1=2$$
$$6x=2-1$$
$$6x=1$$
$$x=\frac{1}{6}$$
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