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(9又1/9+1又7/8-5又6/7)/(9又1/9-6又6/7+2又7/8)能简便就简便
题目详情
(9又1/9+1又7/8-5又6/7)/(9又1/9-6又6/7+2又7/8) 能简便就简便
▼优质解答
答案和解析
(9又1/9+1又7/8-5又6/7)/(9又1/9-6又6/7+2又7/8)
=(9+1-5+1/9+7/8-6/7)/(9-6+2+1/9-6/7+7/8)
=(5+1/9+7/8-6/7)/(5+1/9-6/7+7/8)
=1
=(9+1-5+1/9+7/8-6/7)/(9-6+2+1/9-6/7+7/8)
=(5+1/9+7/8-6/7)/(5+1/9-6/7+7/8)
=1
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