Nilai x yang memenuhi persamaan | x-1 | + | x - 3 |= 2 adalah? Tolong di jawab sama caranya!please!

Bab Nilai Mutlak
Matematika SMA Kelas X

|x - 1| + |x - 3| = 2

x - 1 + x - 3 = 2
2x = 2 + 4
x = 6/2
x = 3

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

HP = { 1, 3 }