问题描述: 简便计算 (1/4-1/8)除以5/12-5/12 【17/12-(3/4-1/6)】除以3/4 1个回答 分类:数学 2014-10-14 问题解答: 我来补答 (1/4-1/8)除以5/12-5/12 =(1/4-1/8)*12/5-5/12 =3/5-3/10-5/12 =3/10-5/12 =18-25/60=-7/60【17/12-(3/4-1/6)】除以3/4=【17/12-(3/4-1/6)】*4/3=17/9-(3/4-1/6)*4/3=17/9-1+2/9=10/9 展开全文阅读