更新时间2019-02-25 01:33:38
1-(6分之5-9分之1)
9.25-9分之7-9分之2
12分之7+8分之5-2分之1
13分之12+7分之8-13分之12
8分之1-12分之1+8分之7
12分之1+24分之5+8分之3
1)1-(5/6-1/9)
=1-(15/18-2/18)
=1-13/18
=5/18
2)9.25-7/9-2/9
=9.25-(7/9+2/9)
=9.25-1
=8.25
3)7/12+5/8-1/2
=7/12+(5/8-4/8)
=7/12+1/8
=14/24+3/24
=17/24
3)12/13+8/7-12/13
=12/13-12/13+8/7
=8/7
4)1/8-1/12+7/8
=1/8+7/8-1/12
=1-1/12
=11/12
5)1/12+5/24+3/8
=2/24+5/24+9/24
=16/24
=2/3
1-(5/6-1/9)=1-(1/2+1/3-1/9)=1-(1/2+2/9)=1-1/2-2/9=1/2-2/9=5/18
9.25-7/9-2/9=9.25-1=8.25
7/12+5/8-1/2=7/12+1/8=17/24
12/13+8/7-12/13=8/7
1/8-1/12+7/8=(1/8+7/8)-1/12=1-1/12=11/12
1/12+5/24+3/8=2/24+5/24+9/24=16/24=2/3
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