Respuesta :

Answer:

A3

B1

C2

Step-by-step explanation:

Answer:

A = 3

B = 1

C = 2

Step-by-step explanation:

A. 12r + t - 4r + 6t = 8r + 7t

B. (12r +2t) - (4r + 10t) = 8(r - t)

C. 12(r + t) - 6(r + t) + 4(r + t) - 2(r + t) = 8(r + t)