您好:
(-3又1/4)-【(-3又1/4)+5又1/3】
=-3又1/4+3又1/4-5又1/3
=-5又1/3
4.4+[(-0.1)+8又1/3+(-11又2/3)]+1又1/3
=4.4-0.1+8又1/3-11又2/3+1又1/3
=4.3+9又2/3-11又2/3
=4.3-2
=2.3
1-2-3+4+5-6-7+8+9-10-11+12+……+2009-2010
=(1-2-3+4)+(5-6-7+8)+...+(2009-2010)
=0+0+...+(-1)
=-1
1/2+(-2/3)-(-4/5)+(-1/2)-(+1/3)
=(1/2-1/2)-(2/3+1/3)+4/5
=0-1+4/5
=-1/5
(-1又1/2)-(+3又1/4)+(-4又1/3)+(+2又2/3)
=(-1又1/2-3又1/4)+(2又2/3-4又1/3)
=-4又3/4-1又2/3
=-6又5/12
1又1/3-(2/5-2/3)+(-3/5+1又1/2)
=(1又1/3+2/3)-(2/5+3/5)+1又1/2
=2-1+1又1/2
=2又1/2
如果本题有什么不明白可以追问,如果满意请点击右下角“采纳为满意回答”
如果有其他问题请采纳本题后另发点击向我求助,答题不易,请谅解,谢谢.
祝学习进步!