himpunan penyelesaian l2x-4l - lx+6l=0

Materi : Persamaan Mutlak

Pembahasan :
|2x - 4| - |x + 6| = 0
|2x - 4| = |x + 6|

2x - 4 = x + 6
2x - x = 6 + 4
x = 10

2x - 4 = -(x + 6)
2x - 4 = -x - 6
2x + x = -6 + 4
3x = -2
x = -2/3

Hp : {-2/3 , 10}