Question

Perform the indicated operation.

Answer 1

-20. -100/5 is -20. You could have used a calculator to find this. 

Answer 2

When dividing a fraction in which the top OR the bottom is negative, the answer is negative.  Next, just solve normally.  100/5=20
If you want to check, 20*5=100.
Remember to make the answer negative, so the answer is -20.<span />