(5/12-3/5)-(2/5-7/12)简便计算
问题描述:
(5/12-3/5)-(2/5-7/12)简便计算
急!
答
5/12+7/12-3/5-2/5=1-1=0
(5/12-3/5)-(2/5-7/12)简便计算
急!
5/12+7/12-3/5-2/5=1-1=0