Предмет: Математика, автор: лена555

брат и сестра собирали марки.у них вместе на 20 марок больше,чем у брата,и на12 марок больше,чем у сестры, сколько марок у каждого и сколько марок у них вместе?

Ответы

Автор ответа: irazab

20+12=32 марки всего
32-12=20 марок у сестры
32-20=12 марок у брата

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