59x7/58+57x5/58简便算法怎么做
展开全部
0oShmily2o0,
59×7/58+57×5/58
=(58+1)×7/58+(58-1)×5/58
=58×7/58+1×7/58+58×5/58-1×5/58
=7+7/58+5-5/58
=12+2/58
=12又1/29
59×7/58+57×5/58
=(58+1)×7/58+(58-1)×5/58
=58×7/58+1×7/58+58×5/58-1×5/58
=7+7/58+5-5/58
=12+2/58
=12又1/29
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