Respuesta :

Answer:

B. 136

Step-by-step explanation:

Δ ABC ≅ ΔEDC

so

AC/AB = CE/ED

(144-x)/51 = x/3

51x = 3(144-x)

51x = 432 - 3x

54x = 432

 x = 8

AC = 144 - 8

AC = 136