1) 7/8 и 2/3 = 21/24 и 16/24
2) 6/7 и 4/5 = 30/35 и 28/35
3)3/5 и 4/9= 27/45 и 20/45
4) 8/11 и 5/6 =48/66 и 55/66
5) 19/10 и 1/3 = 27/30 и 10/30
6) 11/15 и 4/7 = 77/105 и 60/105
7)5/8 и 1/11= 55/88 и 8/88
8) 17/20 и 2/9= 153/180 и 40/180
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