Предмет: Математика, автор: Аноним

решите пропорцию x/21 15/14

Ответы

Автор ответа: ledivinogradova

0

Ответ: х=22,5

Пошаговое объяснение:

х=21*15/14

х=22,5

Автор ответа: Аноним

0

х:21=15:14

14х=21*15

х=(21*15)/14=(3*15)/2=45/2=22,5 - это ответ.

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