Сравните дроби: 3/5 и 3/15; 7/16 и 7/61; 10/13 и 10/11; 6/13 и 12/13; 7/15 и 4/15; 12 и 21/31;
1.3/5>3/15. 2.7/16>7/61. 3.10/13 <10/11.<br>4.6/13 <12/13.<br>5.7/15>4/15. 6.12 <21/31