5/9×0.75×8/15简便计算 3/5×3/7+3/5×4/7 简便计算
1个回答
展开全部
5/9×0.75×8/15
=5/9×3/4×8/15
=5/(3*3)*3/4*8/15
=5/3*1/4*8/15
=5/12*8/15
=5/(4*3)*(4*2)/(3*5)
=1/3*2/3
=2/9
3/5×3/7+3/5×4/7
=3/5×(3/7+4/7)
=3/5×7/7
=3/5
=5/9×3/4×8/15
=5/(3*3)*3/4*8/15
=5/3*1/4*8/15
=5/12*8/15
=5/(4*3)*(4*2)/(3*5)
=1/3*2/3
=2/9
3/5×3/7+3/5×4/7
=3/5×(3/7+4/7)
=3/5×7/7
=3/5
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
