拆项法:(-2010又5/6)+(-2009又2/3)+4020又2/3+(-1又1/2)=
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/08 00:47:09
拆项法:(-2010又5/6)+(-2009又2/3)+4020又2/3+(-1又1/2)=
拆项法:(-2010又5/6)+(-2009又2/3)+4020又2/3+(-1又1/2)=
拆项法:(-2010又5/6)+(-2009又2/3)+4020又2/3+(-1又1/2)=
(-2010又5/6)+(-2009又2/3)+4020又2/3+(-1又1/2)
=(-2010-2009+4020-1)+(-5/6-2/3+2/3-1/2)
=-5/6-1/2
=-4/3
=-2010-2009+4020-1-5/6-2/3+2/3-1/2=-4/3
(-2010又5/6) (-2009又2/3) 4020又2/3 (-1又1/2)=-2010又5/6-(-2009又4/6) 4020又4/6-3/2=-3/4
原式=-2010+(-2009)+4020-1-5/6+2/3+2/3-1/2=-5/6+2/3+2/3-1/2=-3/4