问题描述: .求下列式的值:(xy-3/2y-1/2)-(xy-3/2x+1),其中x=10/3,y=8/3 1个回答 分类:数学 2014-10-09 问题解答: 我来补答 xy-3/2y-1/2)-(xy-3/2x+1)=xy-3/2y-1/2-xy+3/2x-1=-3/2y-1/2+3/2x-1=3/2(x-y)-3/2=3/2*2/3-3/2=-1/2 展开全文阅读