发布网友 发布时间:2024-10-24 15:20
共1个回答
热心网友 时间:2024-11-17 00:55
7/18*1/4+(3/4)/(8/7)
=7/4*1/18+7/4*3/8
=31/72*7/4
=217/288
13/8*[(8/9)/(5/6-3/4)]
=13/8*(8/9)/(1/12)
=52/3
5/12*1/13-(1/4)/13
=5/12*1/13-1/52
=2/156
=1/78
热心网友 时间:2024-11-17 00:52
7/18*1/4+(3/4)/(8/7)
=7/4*1/18+7/4*3/8
=31/72*7/4
=217/288
13/8*[(8/9)/(5/6-3/4)]
=13/8*(8/9)/(1/12)
=52/3
5/12*1/13-(1/4)/13
=5/12*1/13-1/52
=2/156
=1/78