Предмет: Математика, автор: марк777555

помогите пожалуйста задача .сестра в два раза моложе брата а вместе 24 года Сколько лет сестре и сколько лет брату

Ответы

Автор ответа: Maria20040609
0
1)24/3=8
2)8*2=16
Ответ: сестре 8, брату 16
Автор ответа: ryazanova1952
0
Сестре - х лет, тогда брату 2*х,  уравнение х+2х=24,  3х=24,  х=24:3,  х=6, 
2х=2*6 =12,  сестре 6 лет,  брату 12 лет.
Автор ответа: ryazanova1952
0
Ну не правильно 24:3 =8, ответ 8 и 16 Бери решение Марии.
Автор ответа: марк777555
0
а можно еще задачю зажать
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