Verified Answer :

RASEA23

They are correct but I don't know whether or nor 13 asks you to simplify 23/20 to 1 3/20. But otherwise, it is all correct. Nice job.

Here, as I can see, you are adding fractions, and making sure you have a common denominator. 

12) is correct
13) is correct

You got a common denominator, and added them up! Great job!