Сравните дроби 5/9 и 7/12;27/25 и 13/10
5\9 < 7\12 27\25 <1 3\10
5/9 u 7/12 5*4/36 u 7*3/36 20/36 < 21/36 ____________________________ 27*2/50 u 13*5/50 54/50 < 65/50