您好:
5/6-3/4+1/3
=10/12-9/12+4/12
=5/12
11/12-(1/6-1/8)
=22/24-4/24+3/24
=21/24
=7/8
7/12-(3/4-1/2)
=7/12-1/4
=1/3
1/2-(3/4-3/8)
=1/2-3/8
=1/8
如果本题有什么不明白可以追问,如果满意记得采纳
如果有其他问题请采纳本题后另发点击向我求助,答题不易,请谅解,谢谢。
祝学习进步!
5/6-3/4+1/3(通分)
=10/12-9/12+4/12
=1/12+4/12
=5/12
11/12-(1/6-1/8)
=11/12-1/6+1/8(通分)
=22/24-4/24+3/24
=18/24+3/24
=21/24(约分)
=7/8
7/12-(3/4-1/2)
=7/12-3/4+1/2(通分)
=7/12-9/12+6/12
=13/12-9/12
=4/12
=1/3
1/2-(3/4-3/8)
=1/2-3/4+3/8
=8/16-12/16+6/16
=14/16-12/16
=2/16
=1/8