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b) =-3/2+(-6/5)-(-3/2)=-3/2-6/5+3/2=-6/5=-1 1/5
c)=∛(9/4* (-3/2)-∛16/9*(-4/3)=∛-27/8-∛-64/27=-3/2-(-4/3)=-3/2+4/3=-1/6
d) =∛-125+∛-216-∛64=-5-6-4=-15