(-1+2/5)÷(-1又1/5)-8*(-5+1)=(-5/5+2/5)/-(6/5)-8*(-4)=3/5*5/6+32=1/2+32=32又1/2(3-2*5)÷(-1/2)-6÷(-5+7)=-7*(-2)-6/2=14-3=11 (-3/2)*1又1/3*(-1/4)-(1/2-1)÷(-1/6)=3/2*4/3*1/4-(-1/2)/(-6)=1/2-3=-2又1/2
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