Respuesta :

11c+3(-5c+4d)=
11c -15c + 12d=

(C.)-4c + 12d


11c + 3(-5c + 4d) = 11c + 3(-5c) + 3(4d) = 11c - 15c + 12d = -4c + 12d

Answer: c. -4c + 12d