4/7+3/8+1/8+5/7的简便方法怎么算?
展开全部
解:4/7+3/8+1/8+5/7等于( 25/14 )
∵已知需求出4/7+3/8+1/8+5/7等于多少
∴4/7 + 3/8 + 1/8 + 5/7
= 4/7 + 5/7 + 3/8 + 1/8
= (4/7 + 5/7)+(3/8 + 1/8)
= 9/7 + 4/8
= 9/7 + 1/2
= (9×2)/(7×2)+(1×7)/(2×7)
= 18/14 + 7/14
= (18+7)/14
= 25/14
答:4/7+3/8+1/8+5/7等于25/14
∵已知需求出4/7+3/8+1/8+5/7等于多少
∴4/7 + 3/8 + 1/8 + 5/7
= 4/7 + 5/7 + 3/8 + 1/8
= (4/7 + 5/7)+(3/8 + 1/8)
= 9/7 + 4/8
= 9/7 + 1/2
= (9×2)/(7×2)+(1×7)/(2×7)
= 18/14 + 7/14
= (18+7)/14
= 25/14
答:4/7+3/8+1/8+5/7等于25/14
展开全部
4/7+3/8+1/8+5/7
=4/7+5/7+3/8+1/8
=9/7+1/2
=18/14+7/14
=25/14
=1又11/14
=4/7+5/7+3/8+1/8
=9/7+1/2
=18/14+7/14
=25/14
=1又11/14
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
4/7+3/8+1/8+5/7
=4/7+5/7+(3/8+1/8)
=11/7+4/8
=11/7+1/2
=22/14+7/14
=29/14
(或=2又1/14)
=4/7+5/7+(3/8+1/8)
=11/7+4/8
=11/7+1/2
=22/14+7/14
=29/14
(或=2又1/14)
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