The first one because of you add 10 and 4 you get 14. And they both multiply 6 by 14.
Your question seems a bit incomplete, but for starters you can write

Expanding where necessary, recalling that

, you have

and you can stop there, or continue to rewrite in terms of the reciprocal functions,

Now, since

, the final form could also take

or
the answer is 6/13 because 12/26 reduces so the answer is 6/13