1/2(x+3)=4x-2 tolong jawab dengan cara

1/2(x+3) = 4x-2
1/2x+6 = 4x - 2
(4x - 2) (2x + 6) = 1
8x^2 + 24x - 4x - 12 = 1
8x^2 + 20x -13 = 0