17/20减3/10,五又3/4减是又1/2等于,1/2减1/7等于,1/2加1/4加1/3等于
问题描述:
17/20减3/10,五又3/4减是又1/2等于,1/2减1/7等于,1/2加1/4加1/3等于
答
11/20 5/4 5/14 13/12
17/20减3/10,五又3/4减是又1/2等于,1/2减1/7等于,1/2加1/4加1/3等于
11/20 5/4 5/14 13/12