Answer
Take the reciprocal.
Work Step by Step
We notice that the two quotients of Exercises #118 and #117 are reciprocals of each other:
$\displaystyle \frac{-0.5}{-1.5}=\frac{1}{\frac{-1.5}{-0.5}}$
Thus the answer to #118 must be the reciprocal of the answer to #117 ($\frac{1}{3}$).
$\displaystyle \frac{1}{\frac{1}{3}}=3$
