2005*2006/2005-1001*(-1002/1003)要简便计算 ,快,很急!11

问题描述:

2005*2006/2005-1001*(-1002/1003)
要简便计算 ,快,很急!11

=2005*(1-2006/1)-1001*(-1-1003/1)
=2005-2006/2005-(-1001-1003/1001)
=2004又2006/1-(-1100又1003/2)
=1003又2006/2003