1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10等于多少?_数学解答

1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10等于多少?

人气：358 ℃　时间：2019-10-09 05:01:13

解答

1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10
=(1/2+1/3+1/6)+(1/4+1/5+1/10)+1/7+1/8+1/9
=1+11/20+1/8+1/7+1/9
=1+27/40+1/9+1/7
=1+283/360+1/7
=1+2341/2520
=4861/2520