Сравните: 2/7 и 6/7, 5/6 и 5/8, 9/11 и 11/9, 1 3/4, и 3 1/4, м- 1/3 и м-2/3, 4/5-с и 4/9-с
2/7<6/7;5/6>5/8;9/11<11/9;1 3/4< 3 1/4; м-1/3>м-2/3;4/5-с>4/9-с