Предмет: Математика, автор: markru1978

На двух полках было 126 книг.На одной из них книг было на 18 меньше,чем на другой.Сколько книг было на каждой полке? На одной полке книг было в 3 раза больше,чем на другой,или же на 48 штук больше.Сколько книг было на каждой полке?

Ответы

Автор ответа: Олег200203

х+х+18=126
2х=126-18
2х=108
х=108:2
х=54
54 книги на одной полке
54+18=72 книги на другой полке
3х-х=48
2х=48
х=48:2
х=24
24 книги было на одной полке
24*3=72 книги на другой полке.

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