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共回答了594个问题 举报
5/6-3/4+1/3
=10/12-9/12+4/12
=(10-9+4)/12
=5/12
11/12-(1/6-1/8)
=11/12-2/12+1/8
=9/12+1/8
=3/4+1/8
=6/8+1/8
=7/8
7/12-(3/4-1/2)
=7/12-(3/4-2/4)
=7/12-1/4
=7/12-3/12
=4/12
=1/3
1/2-(3/4-3/8)
=1/2-(6/8-3/8)
=1/2-3/8
=4/8-3/8
=1/8
1年前
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