Предмет: Математика, автор: kkuka150391

Здравствуйте! Помогите решать задачу пожалуйста

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Автор ответа: darhanermekbaev

1

Ответ:

Пошаговое объяснение:

Было Отдал Осталось

b 12 b - 12

a + 7 a 7

31 31 - x x

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