Предмет: Математика, автор: Эерика

У Наташи и Кати вместе 27руб,причём у Кати на 3 руб. меньше,чем у Наташи. Сколько денег у Кати?

Ответы

Автор ответа: lenochkashukshina13

Пусть Х руб. -у Наташи , тогда Х-3 руб- у Кати
1. Х+(Х-3)=27
Х+Х-3=27
2Х=27+3
2Х=30
Х=30/2=15 рублей было у Наташи
2. 15-3=12рублей было у Кати
Ответ: 12 рублей

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