Ответ:
2/3 : 7/9 = 6/7
6 : 3/5 = 10
4 1/2 : 3 3/4 = 1 1/5
20/21 : 15 = 4/63
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Ответ:
2/3 : 7/9 = 6/7
6 : 3/5 = 10
4 1/2 : 3 3/4 = 1 1/5
20/21 : 15 = 4/63