1/(3/4+1/3)*39怎么简算

问题描述:

1/(3/4+1/3)*39怎么简算

3/4+1/3=13/12
1/(3/4+1/3)=12/13
1/(3/4+1/3)*39=36

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