|10/11-11/12|+|11/12-12/13|+|12/13-13/14|+…+|98/99-99/100|等于几
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/17 13:36:51
|10/11-11/12|+|11/12-12/13|+|12/13-13/14|+…+|98/99-99/100|等于几|10/11-11/12|+|11/12-12/13|+|12/13-13/1
|10/11-11/12|+|11/12-12/13|+|12/13-13/14|+…+|98/99-99/100|等于几
|10/11-11/12|+|11/12-12/13|+|12/13-13/14|+…+|98/99-99/100|等于几
|10/11-11/12|+|11/12-12/13|+|12/13-13/14|+…+|98/99-99/100|等于几
=11/12-10/11+12/13-11/12+.+99/100-98/100
=99/100-10/11
=89/1100