Предмет: Математика, автор: bumer2013

помогите решить: старший брат покрасил 7/10 забора, а младший - 1/4. какая часть забора осталась неокрашенной?

Ответы

Автор ответа: triolana

5

1)7/10+1/4=19/20 покрасили вместе

весь забор принимаем за 1,тогда

2)1-19/20=1/20 часть осталась неокрашеной

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