Respuesta :

13 1/4 is the answer

9 7/8 + 3 3/8

12 10/8

13 2/8

13 1/4 (simplified)
add the whole numbers 9+3=12 the denomonaters are the same so keep them the same add the numerators 7+3= 10 and 10-8= 2 so add one to your whole number and have two as ur numerator so now you have thirteen and two eighths or 13 2/8