1. |x-3| jika x > 3 2. | 2x-5| jika x <0 3. | 2x -3| = 6 4. |x +3| = |2x-1| 5. |x-6| + |3+2x| = 20

1. | x-3| jika x> 3
maka | x-3 | > 0

2. |2x-5| jika x<0
Maka |2x-5| > 5

3. |2x-3| = 6
kemungkinan 1. 2x- 3 = 6
x = 4,5

kemungknan 2. 2x-3 = -6
x = -1,5

4. |x+3| = | 2x-1| kuadratkan kedua ruas sehingga,
x^2 + 6x +9 = 4x^2 -4x + 1
3x^2 - 10x -8 = 0
(3x+2) ( x-4) = 0
maka, x = - 2/3
x = 4

5. |x-6| + |3+2x| = 20
uraikan menjadi 4 kemungkinan

kemungkinan 1
x-6+3+2x = 20
x = 7 2/3

kemungkinan 2
x-6 -(3+2x) = 20
x-6-3-2x = 20
x = -29

kemungkinan 3
-(x-6)+3+2x = 20
-x+6+3+2x = 20
x = 11

kemungkinan 4
-(x-6)-(3+2x) = 20
x-6+3+2x = -20
x = -(5 2/3)