Answer
$x = \frac{2}{3}, 7$
Work Step by Step
There are two ways to solve for $x$:
1) Expand and simplify
$x(3x -2) - 7(3x-2) = 0$
$3x^{2} - 2x - 21x + 14 = 0$
$3x^{2}-23x+14$
2) Simply solve for $x$
$(x-7)(3x-2) = 0$
$x = \frac{2}{3}, 7$