1⼀3*4+1⼀4*5+1⼀5*6+1⼀6*7+1⼀7*8+1⼀8*9+1⼀9*10=?

2024-12-20 15:51:51
推荐回答(1个)
回答1:

原式=1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7+1/7-1/8+1/8-1/9+1/9-1/10
=1/3-1/10
=7/30
每个分式分成两个分数相减

望采纳,谢谢!!!