Respuesta :

51/4 is the correct answer
[tex]2 \frac{1}{2} + 3 \frac{1}{4} + 7 = \frac{5}{2} + \frac{13}{4} + 7 = \frac{10+13+28}{4} = \frac{51}{4} = 12 \frac{3}{4} [/tex]