Answer:
18.3824%
Step-by-step explanation:
Sorry, this may be wrong. I am using an old skill, so it may be wrong.
This are fractions because they are not mixed fraction by the way those two are 0.5
1) Cancel out the common factor which in this case is 8 
2)First apply exponent rule
now cancel out the common factors which are n and n+7 leaving you with 
3)Factorize
cancel out the common factor in this case x+2 leaving you with 
4) Factorize
cancel out the common factor in this case 3w-1 leaving you with 
5) In the picture
6)In the picture
I am REALLY tired sorry I wont be able to do the rest, I hope these are helpful :)