(-2又1/3)-(-10又1/3)+(-8又1/5)-(+3又2/5)
=(-2又1/3+10又1/3)+(-8又1/5-3又2/5)
=8-11又3/5
=-1又3/5
598-12又4/5-31又3/5-84
=598-44又2/5-84
=598-128又2/5
=469又3/5
(-2又1/3)-(-10又1/3)+(-8又1/5)-(+3又2/5)
=(-2又1/3+10又1/3)+(-8又1/5-3又2/5)
=8-11又3/5
=-1又3/5
598-12又4/5-31又3/5-84
=598-44又2/5-84
=598-128又2/5
=469又3/5