Предмет: Математика, автор: Alina8311

помошите пожалуйста решить задачу 153

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Автор ответа: zubkovasoltus

70×2=140 км-расстояние 1 поезда за 2 часа,80×2=160км-расстояние 2 поезда за 2 часа.160+140=300км-расстояние между поездами

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