(3х - 1)(2х + 3) = 3*(2х - 1),

6х² + 9х - 2х - 3 = 6х - 3,

6х² + 7х - 3 - 6х + 3 = 0,

6х² + х = 0,

х * (6х + 1) = 0,

х1 = 0,   6х + 1 = 0,

             6х = -1,

            х2 = -1/6