5/6 и 7/11 = 55/66 и 42/66
7/13 и 7/16 = 112/208 и 91/208
3/8 и 1/6 = 9/24 и 4/24
5/8 и 7/10 = 25/40 и 28/40
7/12 и 11/18 = 21/36 и 22/36
10/21 и 9/14 = 20/42 и 27/42
3/10 и 3/8 и 3/4 = 12/40 и 15/40 и 30/40
3/28 и 9/14 и 7/8 = 6/56 и 36/56 и 49/56
572=500.70.2. 633=600.30.3. 801=800.1. 702=700.2.
Только 5 и 6)
7\7 неправильна дробь