Respuesta :

Answer:

Step-by-step explanation:

6(2a + b ) +b

12a + 6b +b

12a + 7b

so  answer B looks good

Answer: B) 12a+7b

Step-by-step explanation:

6(2a+b) +b

12a+6b+b

Combine like terms

12a+7b

Therefor B is correct