递等式计算题5/6-3/4+1/3 11/12-(1/6-1/8) 7/12-(3/4-1/2) 1/2-(3/4-3/8)

问题描述:

递等式计算题5/6-3/4+1/3 11/12-(1/6-1/8) 7/12-(3/4-1/2) 1/2-(3/4-3/8)

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
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