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Ответ

Автор - panterasq

Ответ:

Пошаговое объяснение:

3,4 : 20,4 = 17/5 : 102/5 = 17/5 * 5/102 = 1/6

1 2/5 : 2 4/15 = 7/5 : 34/15 = 7/5 * 15/34 = 21/34

1,17 : 1 4/5 = 117/100 : 9/5 = 117/100 * 5/9 = 13/20

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