Предмет: Математика, автор: mos07

У Андрея и Бори вместе 11 орехов, у Андрея и Вовы 12 орехов, у Бори и Вовы -13 ор. Сколько орехов у Андрея, Бори и Вовы вместе?

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Автор ответа: olgauazine

0

-13 +13=0+9=9вот как то так

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