Предмет: Математика, автор: Аноним

Сформулируй задачу по краткой записи. Решил задачу. Вычисли и запиши ответ.

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Автор ответа: lllane4kalll

в 1 рулоне - 2835м., что в 7 раз больше чем во 2
следовательно
2835 поделить на 7 = 405
в 1 рулоне 2835 + во 2 рулоне 405 = 3280 метров в обоих рулонах

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