Teacher: In this task you're given a question and you have to paraphrase the question to create the output question while retaining the meaning of the original question.
Teacher: Now, understand the problem? If you are still confused, see the following example:
What can one do after MBBS?
Solution: What do i do after my MBBS ?
Reason: In this example both the question ask the same thing about what to do after MBBS hence second question is the correct output 

Now, solve this instance: How do I get rid of black elbows?
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
How can I get rid of all this like back black neck and other parts on my skin, is there any liquid, soap or something?