3/4-(1/4-1/6)= 4/5-5/11+1/11= 7-(3/4-2/5)= 5/6-13/4-(1/4-1/6)= 4/5-5/11+1/11=7-(3/4-2/5)=5/6-1/4+1/3=4-7/12-5/12=5/12+3/4+3/12= 亲,要有过程

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3/4-(1/4-1/6)=4/5-5/11+1/11=7-(3/4-2/5)=5/6-13/4-(1/4-1/6)=4/5-5/11+1/11=7-(3/4-2/5)=5/6-1/4+1/3=4-7

3/4-(1/4-1/6)= 4/5-5/11+1/11= 7-(3/4-2/5)= 5/6-13/4-(1/4-1/6)= 4/5-5/11+1/11=7-(3/4-2/5)=5/6-1/4+1/3=4-7/12-5/12=5/12+3/4+3/12= 亲,要有过程
3/4-(1/4-1/6)= 4/5-5/11+1/11= 7-(3/4-2/5)= 5/6-1
3/4-(1/4-1/6)=
4/5-5/11+1/11=
7-(3/4-2/5)=
5/6-1/4+1/3=
4-7/12-5/12=
5/12+3/4+3/12= 亲,要有过程

3/4-(1/4-1/6)= 4/5-5/11+1/11= 7-(3/4-2/5)= 5/6-13/4-(1/4-1/6)= 4/5-5/11+1/11=7-(3/4-2/5)=5/6-1/4+1/3=4-7/12-5/12=5/12+3/4+3/12= 亲,要有过程