18-32/8+(-2)^2*5
=18-4+4*5
=14+20
=34(-2)-[平方2-6分之一]*5-6分之一*(-3[平方2]) 写过程(-2)-(2^2-1/6)*5-1/6*(-3)^2=-2-20+5/6-1/6*9=-22+5/6-9/6=-22-4/6=-68/33/5*(1/3-1/2)/(5/4)=(3/5*1/3-3/5*1/2)*(4/5)=(1/5-3/10)*(4/5)=1/5*4/5-3/10*4/5=4/25-6/25=-2/25