(2⼀1-3⼀1)+(3⼀1-4⼀1)+(4⼀1-5⼀1)+(5⼀1-6⼀1)+(6⼀1-7⼀1)

2025-06-21 12:33:26
推荐回答(1个)
回答1:

你是想问(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6)+(1/6-1/7)这个问题吧?
(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6)+(1/6-1/7)
=1/2-1/7
=5/14