Ответ учителя по предмету Математика
Пусть шапка будет стоить х рублей.
Тогда 5 шапок будет стоить 5х рублей, а куртка стоит 700 рублей меньше, т.е. 5х-700, но на 200 рублей больше, чем 2 шапки т.е. 2х+200.
Составим и решим уравнение:
5х-700=2х+200
5х-2х=700+200
3х=900
х=900:3
х=300(руб)-стоит шапка.
Ответ:300 рублей
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