1、(+8.125)+(-六又2/9)-(-三又1/8)-(+二又2/9)-|-三又5/9|
=(8.125+3又1/8)+(-6又2/9-2/9-3又5/9)
=11又1/4-10
=1又1/4
2、-9除以5/9*(-2/3)*(-1)的2013次方
=-81/5*4/9*(-1)
=36/5
=7.2
3、-1²-【一又3/7+(-12)除以6】²*(-3/4)³
=-1-【1又3/7-2】²*(-27/64)
=-1-(-4/7)²*(-27/64)
=-1-16/49*(-27/64)
=-1+27/196
=-169/196
