| 2x -1 | = | x + 3 | nilai mutlak, bantuin yaa:(

|2x-1|=|x +3|
(2x-1)(2x-1) = (x+3)(x+3)
(4x^2 - 2x-2x +1) = (x^2+3x+3x+9)
(4x^2-4x+1) =( x^2 +6x +9)
(4x^2 -x^2 -4x -6x +1 -9) = 0
3x^2 -10x -8 = 0
(3x+2 )(x -4) = 0
3x +2 = 0 x-4=0
X= -2/3 x= 4