Предмет: Алгебра, автор: Аноним

Решите задачу при помощи уравнения:
Отцу 40 лет,сыну 12 лет.Сколько лет назад отец был старше сына в 5 раз

Ответы

Автор ответа: Lesben
0
x let tomu nazad imel otec 40-x godov, syn 12-x godov
40-x= 5(12-x)
40-x=60-5x
4x=20
x=5
5 let tomu nazad u otca bylo 35 let, u syna 7 let, značit otec v 5 raz starše syna.

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