发布网友 发布时间:2024-10-24 04:22
共3个回答
热心网友 时间:2024-11-06 19:21
3/4-2/7+1/4+5/7=(3/4+1/4)+(5/7-2/7)=1+3/7
热心网友 时间:2024-11-06 19:24
四分之三减七分之二加四分之一加七分之五
=(3/4)-(2/7)+(1/4)-(5/7)
=(3/4)+(1/4)-(2/7)-(5/7)
=[(3/4)+(1/4)]-[(2/7)+(5/7)]
=1-1
=0
热心网友 时间:2024-11-06 19:19
3/4-2/7+1/4+5/7
=(3/4+1/4)+(5/7-2/7)
=1+3/7
=10/7