Răspuns :
|x - (-1)| ≤ 4
|x - (-1)| = x - (-1) daca x ≥ (-1) => x + 1 ≤ 4 => x ≤ 4 - 1 => x ≤ 3
|x - (-1)| = (-1) - x daca (-1) ≥ x => -1 - x ≤ 4 => -x ≤ 4 + 1 => -x ≤ 5 => x ≥ - 5
x ∈ [-5 , 3]
|x - (-1)| = x - (-1) daca x ≥ (-1) => x + 1 ≤ 4 => x ≤ 4 - 1 => x ≤ 3
|x - (-1)| = (-1) - x daca (-1) ≥ x => -1 - x ≤ 4 => -x ≤ 4 + 1 => -x ≤ 5 => x ≥ - 5
x ∈ [-5 , 3]