
3个回答
展开全部
1/24 +1/120 +1/360 + 1/840 +1/630
=(15+3+1)/360 +1/840 +1/630
=133/2520 + 3/2520 + 4/2520
=7/126
=(15+3+1)/360 +1/840 +1/630
=133/2520 + 3/2520 + 4/2520
=7/126
展开全部
1/24+1/120+1/360+1/840+1/630=35/840+1/840+3/360+1/360+1/630
=36/840+4/360+1/630=3/70+1/90+1/630=(27+7+1)/630=35/630=1/18
=36/840+4/360+1/630=3/70+1/90+1/630=(27+7+1)/630=35/630=1/18
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
1/24+1/120+1/360+1/840+1/630=5/120+1/120+1/840+1/360+1/630=6/120+1/840+1/360+1/630=18/360+1/360+1/630+1/840=19/360+1/630+1/840=133/2520+4/2520+3/2520=140/2520=1/18
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询