Предмет: Алгебра, автор: Uliana090903

в копилке 12 монет достоинством 2 р. и 10 р. Всего 80 р. Сколько монет достоинством 10 р. в копилке?
Составьте систему уравнений по условию задачи, приняв за х монеты достоинством 2 р, а за у-10 р.

Ответы

Автор ответа: alyoshinavika

4

монет наминалом по 10 рублей 7 а наминалом в 2 рубля 5 монет

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