Question 237225
This one sure looks UGLY, but a lot of problems are just made to LOOK that way--they really are not as bad as they LOOK!!  


First, divide the fraction (-56)/7 =-8, and remember that -(-8)=+8.


Next, you have  

20/(3(2x-8)-(-56)/7)

20/(3(2x-8+8))

20/(3(2x))
20/(6x)


Divide out a factor of 2:
10/(3x)


Dr. Robert J. Rapalje