I suspect a typo. The difference cannot be more than 9, so the number must be at most 18.
It is even, so the only candidates are
10 12 14 16 18
None of those works.
A 2-digit number is twice the difference of its digits. What is the number?
2 answers
It is impossible. 12, 14, or 16 may work, but I think you should give up on this equation...