<1>(-2/3)-(-2/3)-(+3/4)
=0+(+3\4)
=3\4
<2>.(-5.4)-(+6又13/20)-1又1/4
=(-5.4)-(+6.65)-1.25
=(-12.05)-1.25
=-13.3
<3>.2-5/12-5/18+1/12-7/18-2又8/17
=不确定
<4> 1又1/2-5/6+2又3/4+3/8-4又2/3
=3/2-5/6+11/4+3/8-14/3
=(9/6-5/6)+66/24+9/24-112/24
=3/2+75/24-112/24
=3/2+37/24
=36/24+37/24
=73/24
<5>(-4又7/8)+5又1/2+(-4又1/4)+(-3又1/8)
=(-4又7/8)+(-4又2/8))+5又1/2)+(-3又1/8)
=-73/8+5又4/8-3又1/8
=-76/8+19/8
=95/8
<6>16-(-8又1/3)-(+4又2/3)
=16-(-8又1/3-4又2/3)
=16-(-13)
=29
或许有的不对,请谨慎填写或参考!
参考资料:[email protected]