Предмет: Математика, автор: Аноним

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Автор ответа: alchik12

Пусть х будет- масса одной части.11х-масса воды,5х-масса спирта,4х масса казеина
Зная,что 60г меньше спирта,то составим уравнение
11х-5х-4х=60
2х=60
Х=60:2
Х=30(г)-одна часть
4*30=120(г)-масса казеина

Автор ответа: alchik12

Вроде нормально?

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