农业资讯 鸡免同笼一共有15个头,鸡脚和免脚相等,鸡兔各有几只?_农林牧渔2021-12-31zhiwu阅读(2)赞(0)鸡免同笼一共有15个头,鸡脚和免脚相等,鸡兔各有几只?鸡免同笼一共有16个头,鸡脚和免脚相等,设鸡和免各有x只。鸡的腿数+免的腿数=总腿数(或48条),2x+4