Answer
a.) -18($\frac{1}{6}$)
b.) -3
Work Step by Step
Find the multiplicative inverse of the divisor by switching the numerator and the denominator and keeping the sign the same.
a.) -18$\div6=-18\times\frac{1}{6}$
b.) $-18\times\frac{1}{6}=-\frac{18}{6}=-3$