14/17*5/22-3/22*5/17能用简便方法算吗
问题描述:
14/17*5/22-3/22*5/17能用简便方法算吗
答
14/17*5/22-3/22*5/17
=14/22*5/17-3/22*5/17
=(14/22-3/22)*5/17
=1/2*5/17
=5/34