小学简算(1题)具体看下面

问题描述:

小学简算(1题)具体看下面
2.35/[5.75-4.5x(0.5+1/3)] ps原题是:2又7/20除以[5又3/4减4.5x(百分之二十+三分之一)]

2.35/[5.75-4.5x(1/5+1/3)]
=2.35/(5.75-4.5*1/5-4.5*1/3)
=2.35/(5.75-0.9-0.15)
=2.35/4.7
=0.5你错了- -,应该是2.35/(5.75-0.9-1.5))才对,最后是47/67