16 ≤ 2x – 14 < 30
16 + 14 ≤ 2x – 14 + 14 < 30 + 14
30 ≤ 2x < 44
30 / 2 ≤ 2x / 2 < 44 / 2
15 ≤ x < 22
x ∈ [15; 22)
