Respuesta :

Answer: 14 1/2

Step-by-step explanation:

5 + 7 = 12

12/8 = 3/2

3/2 = 1 1/2

1 1/2 + 13 = 14 1/2

First you put the 13 into eighths by ; 13 x 8, then you add the 5 and 7 and put it over an 8, then you substitute for a whole number.

13 x 8 = p
p + 5 + 7 = t
t / 8 = whole number