Предмет: Информатика, автор: ыфвыцф

Было 9 листов бумаги. Некоторые из них разрезали на три части. Всего стало 15 листов. Сколько листов бумаги разрезали.

Ответы

Автор ответа: к5о5т5я

15-9=6 л стало больше
т к некоторые листы разрезали на 3 части, то каждый лист дал +2
6/2=3 листа разрезали
Ответ 3 листа

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