Ответы на вопрос:
1) 18/30 и 15/18 = 3/5 и 5/6 = 18/30 и 25/30
2) 28/40 и 10/45 = 7/10 и 2/9 = 63/90 и 20/90
3) 49/105 и 27/36 = 7/15 и 3/4 = 28/60 и 45/60
4) 60/90 и 15/50 = 2/3 и 3/10 = 20/30 и 9/30
5) 10/20, 8/24 и 9/45 = 1/2, 1/3 и 1/5 = 15/30, 10/30 и 6/30
6) 22/24, 24/30 и 27/36 = 11/12, 4/5 и 3/4 = 55/60, 48/60 и 45/60
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