Предмет: Математика, автор: qwertelena

На каждой маленькой полке разложили по 7 детских книг ,а на каждой большой в 2 раза больше. Сколько полок заняли все книги, если всего на полках 126 книг.

Ответы

Автор ответа: Galkinaalena

1) 7•2=14(книг)-размещается на больших полках.
2)14+7=21(книга)-на большой и на маленькой полках.
3)126:21=6(полок)
Ответ: 6полок занято.

Galkinaalena: Думаю так

Автор ответа: Besymna9

1) 7*2=14(книг)- на больших полках.
2)14+7=21(книга)-на большой и на маленькой полках.
3)126/21=6(полок)
Ответ: 6 полок занято.

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