(-1000又2/3)+(-999又5/6)+2000又3/4+(-1又1/2)用拆项法做
问题描述：
(-1000又2/3)+(-999又5/6)+2000又3/4+(-1又1/2)用拆项法做
答
(-1000又2/3)+(-999又5/6)+2000又3/4+(-1又1/2)
=-1000-2/3-999-5/6+2000+3/4-1-1/2
=-2-5/6+3/4
=-2又1/12