Предмет: Математика, автор: nailsattarov19

помогите пожалуйста помогите пожалуйста!​

Приложения:

Ответы

Автор ответа: laiker034
1

Ответ:30 орехов

Пошаговое объяснение:

Сначала у каждого по 30 30 -20 = 10у старшего 30 + 20 = 50 у младшего

nailsattarov19: спасибо
Автор ответа: TomikoByanka
2

Ответ:

у старшего брата было х орехов,потом он отдал 20 орехов брату значит х-20 а у младшего х+20

составляем уравнение:

(х-20)*5=х+20

5х-100=х+20

5х-х=20+100

4х=120

х=120:4

х=30

ответ:по 30 шт.

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