Предмет: Математика, автор: Аноним

Помогите пожалуйста)номер 3

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Ответы

Автор ответа: tatsach

Ответ:

Пошаговое объяснение:

1 4/21:5/7=25/21*7/5=5/3=1 2/3

2/5*5/7=2/7

1 2/3-2/7=1 14/21-6/21=1 8/21

Автор ответа: hedggehog

Ответ:

Пошаговое объяснение:

Решил и другие случайно)

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