a) [[$\frac{18}{3}$]]=
b) [[$\frac{-30}{-6}$]]=
c) [[$\frac{42}{6}$]]=
d) [[$\frac{-16}{-8}$]]=
e) [[$\frac{32}{4}$]] =
f) [[$\frac{-32}{4}$]]=
g) [[$\frac{32}{-4}$]]=
h) [[$\frac{-32}{-4}$]]=
i) [[$\frac{-20}{-20}$]]=
j) [[$\frac{-120}{20}$]]=