Answer:
x > - 5
Step-by-step explanation:

A rectangle or a parallelogram is a polygon with only 2 congruent sides and 2 congruent angles.
2*(x-5) = -33, so x-5 = -16.5, so x = -11.5
This is assuming that "the difference between a and b" is a-b, which seems to be the accepted interpretation.