Ответ:
9/70 и 13/35 = 9/70 и 26/70
3/10 и 2/7=21/70 и 20/70
7/18 и 2/27= 21/54 и 4/54
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Ответ:
9/70 и 13/35 = 9/70 и 26/70
3/10 и 2/7=21/70 и 20/70
7/18 и 2/27= 21/54 и 4/54