Respuesta :

Americ
(1/2w+3) - (1/4w+4)

everything in second parentheses becomes negative
=1/2w+3 -1/4w - 4

combine like terms
=1/2w-1/4w+3-4

=1/4w-1

ANSWER: B) 1/4w-1

Hope this helps! :)