1/55+2/55+3/55...+10/55-11/155-12/155-13/155-...-20/155
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/23 15:45:18
![1/55+2/55+3/55...+10/55-11/155-12/155-13/155-...-20/155](/uploads/image/z/18800-8-0.jpg?t=1%2F55%2B2%2F55%2B3%2F55...%2B10%2F55-11%2F155-12%2F155-13%2F155-...-20%2F155)
1/55+2/55+3/55...+10/55-11/155-12/155-13/155-...-20/155
1/55+2/55+3/55...+10/55-11/155-12/155-13/155-...-20/155
1/55+2/55+3/55...+10/55-11/155-12/155-13/155-...-20/155
1+2+3..+10=55
11+12+13+...20=155
所以该式化为55/55-155/155=0答案是0