简便运算:31又3/8乘72又5/13除31又3/8

问题描述:

简便运算:31又3/8乘72又5/13除31又3/8

31又3/8乘72又5/13除31又3/8
=(31又3/8÷31又3/8)x72又5/13
=1x72又5/13
=72又5/13
如追加其它问题,