А)17/48 и 19/36 б)21/34 и 22/51 в)3/10,8/65 и 4/13

а) 17/48 ≥ 19/36 б) 21/34 ≤ 22/51 в)3/10 ≤ 4/13; 8/65 ≥ 4/13