2001*2002/2001-1002*(-1001/1000)
问题描述:
2001*2002/2001-1002*(-1001/1000)
答
2001*2002/2001-1002*(-1001/1000)
= 2002 + 1002*1001/1000
=2002 + 501*1001/500
=2002 + 501501/500
=1001000/500 +501501/500
=1502501/500