1/13÷41 1/39=多少

问题描述:

1/13÷41 1/39=多少
简便运算哦!

163 1/13÷41 1/39
=(160+43又1/13)÷41 1/39
=160*(39/160)+560/13*(39/160)
=39+10又1/2
=49又1/2