The best way to do this is to add the wholes together first, then the fractions. so you have 13+10 is 23. Now add the fractions. All you do is add the top, the denominator stays the same. So 5+2 is 7. You have 7/6. You need to make it a mixed fraction. Divide bottom into top. You get 1 and 1/6. Now you add those whole numbers back. You get 24 and 1/6.