/1/3-1/2/+/1/4-1/3/+/1/5-1/4/+.+/1/10-1/9/

来源：学生作业帮助网编辑：六六作业网时间：2024/11/06 03:48:45

/1/3-1/2/+/1/4-1/3/+/1/5-1/4/+.+/1/10-1/9//1/3-1/2/+/1/4-1/3/+/1/5-1/4/+.+/1/10-1/9//1/3-1/2/+/1/4-1

/1/3-1/2/+/1/4-1/3/+/1/5-1/4/+.+/1/10-1/9/
/1/3-1/2/+/1/4-1/3/+/1/5-1/4/+.+/1/10-1/9/

/1/3-1/2/+/1/4-1/3/+/1/5-1/4/+.+/1/10-1/9/
/1/3-1/2/+/1/4-1/3/+/1/5-1/4/+.+/1/10-1/9/
=1/2-1/3+1/3-1/4+1/4-1/5+……+1/9-1/10
=1/2-1/10
=2/5