问题描述: 能简算就简算.(5/4-1/3)÷1/8+1/7 1个回答 分类:综合 2014-11-25 问题解答: 我来补答 (5/4-1/3)÷1/8+1/7 =(5/4-1/3)*8+1/7 =5/4*8-1/3*8+1/7 =10-8/3+1/7 =30/3-8/3+1/7 =22/3-1/7=154/21-3/21=151/21 展开全文阅读