tentukan himpunan penyelesaian dari |x-2| + |x+4| =7

x - 2 + x + 4 = 7
x + x - 2 + 4 = 7
2x + 2 = 7
2x = 7 - 2
2x = 5
x = 5/2
x - 2 + x + 4 = -7
x + x - 2 + 4 = -7
2x + 2 = -7
2x = -7 - 2
2x = -9
x = -9/2
Hp = {-9/2, 5/2}