5/27 и 2/9 = 5/27 и 6/272/15 и 4/5 = 2/15 и 12/153/7 и 5/21 = 9/21 и 5/211/3 и 3/4 = 4/12 и 9/125/6 и 3/5 = 25/30 и 18/307/9 и 1/5 = 35/45 и 9/452/9 и 4/15 = 10/45 и 12/455/16 и 5/24 = 15/48 и 10/487/18 и 3/4 = 14/36 и 27/369/35 и 3/14 = 18/70 и 15/708/45 и 7/15 = 8/45 и 21/455/6 и 3/16 = 40/48 и 9/48