Answer:
5w+20x-30 (I think, correct me if I am wrong)
Explanation:
when using the distributive property, you multiply every number by the number on the outside (for what I know) so, you multiply -w by -5, -4x by -5, and 6 by -5, so the answer is 5w+20x+30.
-by an 8th grader. :)