3（3x-2）+6 =2 (4x-1)/2
去分母 3（3x-2）+6 = 4x-1
去括号 9x -6 +6 = 4x -1
9x = 4x -1
合并同类项 9x -4x = -1
5x = - 1
x = - 1/5