英语翻译请翻译并解答 In the library of Hope School,there is a bookshelf,which contains two layers:the upper and the lower.There are 245 books in all on the shelf.Everyday,15 books on the upper layer are checked out,and three days later,the
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/25 21:16:40
英语翻译请翻译并解答 In the library of Hope School,there is a bookshelf,which contains two layers:the upper and the lower.There are 245 books in all on the shelf.Everyday,15 books on the upper layer are checked out,and three days later,the
英语翻译
请翻译并解答 In the library of Hope School,there is a bookshelf,which contains two layers:the upper and the lower.There are 245 books in all on the shelf.Everyday,15 books on the upper layer are checked out,and three days later,the number of the books remaining on the two layers is equal.Please respectively calculate the original number of the books on the two layers of the bookshelf.
英语翻译请翻译并解答 In the library of Hope School,there is a bookshelf,which contains two layers:the upper and the lower.There are 245 books in all on the shelf.Everyday,15 books on the upper layer are checked out,and three days later,the
在希望小学的图书管里有一个书架.这个书架有两层:上层和下层.在书架上一共有245本书.每天上层的15本书会借出.三天后,这两层上剩余书本的数量就一样了.请分别计算两层书架上原来各有多少书.
原来是数学题啊
在希望小学的图书管里有一个书架。这个书架有两层:上层和下层。在书架上一共有245本书。每天上层的15本书会借出。三天后,这两层上剩余书本的数量就一样了。请分别计算两层书架上原来各有多少书。
设上层书架原来有书X,下层Y
给你两个方程:1.X-45=Y
2.X+Y=245
X=145,Y=100在应用题中方程一般不写过程...
全部展开
在希望小学的图书管里有一个书架。这个书架有两层:上层和下层。在书架上一共有245本书。每天上层的15本书会借出。三天后,这两层上剩余书本的数量就一样了。请分别计算两层书架上原来各有多少书。
设上层书架原来有书X,下层Y
给你两个方程:1.X-45=Y
2.X+Y=245
X=145,Y=100在应用题中方程一般不写过程
收起
.
在希望小学的图书管里有一个有两层的书架。书架有上层和下层。在书架上一共有245本书。每天上层的15本书会借出。三天后,这两层上剩余书本的数量就一样了。请分别计算两层书架上原来各有多少书。