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В равнобедренном треугольнике ABCABC (не указано, какие стороны равны) биссектриса BLBL перпендикулярна медиане CMCM. BC=7BC=7. Найдите периметр треугольника ABCABC. Если правильных ответов несколько, перечислите их в любом порядке через точку с запятой.

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