鸡兔同笼,有25个头,80条腿,鸡兔各有多少只?怎样求
人气:340 ℃ 时间:2020-04-28 02:56:47
解答
设鸡有x,兔有(25-x)
2x+4(25-x)=80
x=10
兔有25-10=15只
希望对你有帮助,望点击"选为满意答案"
推荐
猜你喜欢
- 有don't do sth instead of doing的用法吗,怎么翻译?
- A successful team beats with one heart是什么意思
- he often___(relax) half a day
- 用作图法求直线斜率时,必须采用什么方法?
- Edward Smith is _____old.He works in a bank.
- 连词成句 threw,Li,Ming,the,ball,another,boy,to
- Lily doesn't want to buy__same present__Lucy did填空
- 麻烦您了,您帮我看看这道题呗 we see things by our eyes对么?为什么