himpunan penyelesaian persamaan nilai mutlak |2x+4|

positif
| 2x + 4 | = 10
2x + 4 = 10
2x = 10 - 4
2x = 8
x = 4

negatif
| 2x + 4 | = -10
2x + 4 = -10
2x = -10 - 4
2x = 14
x = 7
jadi hpnya (4,7)