1/(3/4+1/3)*39怎么简算
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1/(3/4+1/3)*39怎么简算1/(3/4+1/3)*39怎么简算1/(3/4+1/3)*39怎么简算1/(3/4+1/3)*39=12/(3/4×12+1/3×12)*39=12/(9+4)*
1/(3/4+1/3)*39怎么简算
1/(3/4+1/3)*39怎么简算
1/(3/4+1/3)*39怎么简算
1/(3/4+1/3)*39
=12/(3/4×12+1/3×12)*39
=12/(9+4)*39
=12/13*39
=12*3
=36
3/4+1/3=13/12
1/(3/4+1/3)=12/13
1/(3/4+1/3)*39=36
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