(1)原式=-65/3+15/4+2/3-1/4=-65/3+2/3+15/4-1/4=-63/3+14/4=-252/12+42/12=70/4
(2)原式=3/4*3/2*(-4/9)=9/8*(-4/9)=-1/2
(3)原式=4*9+15+6=57
(4)原式=1/4*(-12)-1/2*(-12)+1/6*(-12)=-3+6-2=1
(5)原式=6.167*(-2/5+3/5+4/5)=6.167*1=6.167
(6)原式=-1-(1-(1-0.5*64))=-1-(1-(1-32))=-1-(1-1+32)=-1-32=-33
追分啊、打的手酸死了