Предмет: Математика, автор: gondirskii

Не могу решить дробь:4 2/7 * 2 = ?

Ответы

Автор ответа: elenica2000

4 2/7 = 30/7
умножается только числитель дроби:
30/7 * 2 = (30*2)/7 = 60/7 = (выделяем обратно целое) 8 4/7
или
4 целых 2/7 + 4 целых 2/7 = 8 целых 4/7

Автор ответа: nactayshegerdy

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