tolong saya cara menentukan himpunan penyelesaian persamaan nilai mutlak beserta definisinya.... 1. |x-4|=12 2. |3x-1|=x-2

1.
| x - 4 | = 12

x - 4 = 12
x = 12 + 4
x = 16

x - 4 = -12
x = -12 + 4
x = -8

Hp = {-8 atau 16}

2.
| 3x - 1 | = x - 2

3x - 1 = x -2
3x - x = -2 + 1
2x = -1
x = -1/2

-(3x - 1) = x - 2
-3x + 1 = x - 2
-3x - x = -2 - 1
-4x = -3
x = 3/4

Hp = {-1/2 atau 3/4}