Предмет: Математика, автор: Жрипончик

мама купила 2 пакета молока по 130 тг и несколько сырков по 45 тг. За покупку она заплатила 485 тг. Сколько сырков купила мама ? моно пожалуйста уравнением, прошу!!!!!!!!!!!)))))))))))))))))

Ответы

Автор ответа: ivan9yakim

485-(2*130)=225
225 /45=5 сырков

Жрипончик: А уравнением можно?

ivan9yakim: да без б

ivan9yakim: 485-45х=2*130

ivan9yakim: -45х=-225

ivan9yakim: х=5

Жрипончик: Спасибо)

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