展开全部
1/55÷1/7+54/55*7
=1/55*7+54/55*7
=7/55(1+54)
=7/55*55
=7
=1/55*7+54/55*7
=7/55(1+54)
=7/55*55
=7
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
1/55÷1/7+54/55×7
=1/55×7+54/55×7
=7×(1/55+54/55)
=7×1
=7
=1/55×7+54/55×7
=7×(1/55+54/55)
=7×1
=7
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