6/1十3/1十2/1 15/8+(30/7一5/1) 7/6一(7/1+2/1) 10/9-(46/1十3/1十2/115/8+(30/7一5/1)7/6一(7/1+2/1)10/9-(4/1-6/1)
问题描述:
6/1十3/1十2/1 15/8+(30/7一5/1) 7/6一(7/1+2/1) 10/9-(4
6/1十3/1十2/1
15/8+(30/7一5/1)
7/6一(7/1+2/1)
10/9-(4/1-6/1)
答