himpunan penyelesaian dari 1. | 2x |+5=13 2. -3 | x-4 |+5=14 3. | x-3 |+| 2x-8|=5 4. | 7x |=4-x

Nilai Mutlak

1. |2x| + 5 = 13
| 2x | = 13 - 5 = 8
2x = 8 atau 2x = - 8
x = 4 atau x = -4

2. -3 |x - 4|+ 5 = 14
- 3| x  - 4 | = 14- 5 = 9
| x- 4 | =- 3 {false]

3. |x - 3| + |2x - 8| =5
x- 3 + 2x - 8 = 5
3x - 11 = 5
3x = 16
x = 16/3
atau
-(x-3) - (2x- 8) = 5
-x + 3 - 2x + 8 = 5
-3x + 11 = 5
- 3x = 5-11= - 6
x = -6/-3
x = 2
HP (2, 16/3)

4. |7x |=4x
7x = 4x
x = 0