A) -7 < X < -1 B) -3 < X < 3 C) -1 ≤ X ≤ 6...

Bài 3: Tỡm x  Z:a) -7 < x < -1 b) -3 < x < 3 c) -1 ≤ x ≤ 6 d) -5 ≤ x < 6