Respuesta :

(7/2b - 3) - (8 + 6b)
= 7/2b - 3 - 8 - 6b
= 7/2b - 6b - 11
= -5/2b - 11

In short, Your Answer would be Option A

Hope this helps!
(7/2b - 3) - (8 + 6b)

= 7/2b - 3 - 8 - 6b
= 7/2b - 6b - 11
= (7b - 12b)/2 - 11
= - 5/2b - 11