Предмет: Математика, автор: Vladycb

придумай текстовую задачу математическая модель которое представляет собой линейное уравнение с двумя переменными

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Автор ответа: 987oiu789

Первоклассникам раздали тексты, которые они могут прочитать- за с минут, третьеклассникам- по а минут. 10 первоклассников и 5 третьеклассников читали свои тексты без перерыва в течение 80 минут.
10с+5а=80

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