问题描述: 7/11×7/8-5/12×7/11 1/15×13/17-8/17×1/15 递等式计算. 1个回答 分类:数学 2014-09-17 问题解答: 我来补答 7/11×7/8-5/12×7/11 =(7/8-5/12)×7/11 =11/24×7/11 =7/241/15×13/17-8/17×1/15 =(13/17-8/17)×1/15 =5/17×1/15 =1/51 展开全文阅读