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)
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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)
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)
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
如果本题有什么不明白可以追问,
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
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)
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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
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