Предмет: Математика, автор: mirzokhid

длина первого отрезк 25см.длина второго отрезка на 17см больше.чем длина первого .а длина третьего на 12см меньше.чем сумма длин первого и второго отрезков.найди длину третьего отрезкао

Ответы

Автор ответа: Vasilekkulich

Ответ:

55см

Пошаговое объяснение:

25 + 17 = 42. длина 2 отр.

42+25-12=55 длина 3 отр.

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