2\3/(5\6+1\4) 用简便

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2\3/(5\6+1\4)用简便2\3/(5\6+1\4)用简便2\3/(5\6+1\4)用简便没法简便=(2/3)/(13/12)=2/3*12/13=8/13

2\3/(5\6+1\4) 用简便
2\3/(5\6+1\4) 用简便

2\3/(5\6+1\4) 用简便
没法简便
=(2/3)/(13/12)
=2/3*12/13
=8/13