鸡兔同笼,有十二个头,四十只脚,算一算,笼子里有几只鸡,几只兔?

2025-04-05 17:36:12
推荐回答(1个)
回答1:

设鸡有x只,则兔有(12-x)只
2x+4(12-x)=40
2x+48-4x=40
-2x=-8
x=4 12-4=8