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До обеда магазин продал 7/11 всех пирожных. После обеда он продал половину остатка и ещё 10 пирожных. Сколько пирожных было продано за день??
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Предмет:
Математика -
Автор:
michellefodk - 5 лет назад
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Ответы 1
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Пусть х пироженных было продано.(7/11)*х+(х-(7/11)х)/2+10=х7х/11-х+(4х/11)/2=-107х/11-11х/11+2х/11=-10(7х-11х+2х)/11=-10-2х=-110х=55Ответ 55 пироженых было продано за день.
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Автор:
ferrisvddo - 5 лет назад
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