问题描述: (2.65+2.77)/(1.95-0.98)怎么简便计算是(2.65+2.77)/(1.98-0.98)怎么简便计算 1个回答 分类:数学 2014-10-17 问题解答: 我来补答 (2.65+2.77)/(1.98-0.98)=(2.65+2.77)/1=2.65+2.77=2.65+2.35+0.42=5+0.42=5.42 展开全文阅读