Respuesta :

I think it's the same they can't combine
[tex] \frac{1}{2}b+ \frac{b}{2}= \frac{1}{2}b+ \frac{1}{2}b=1b=b [/tex]

I just rewrote the two fractions so it was easier to see the way to add. When you add them together, you get 1b or just b.

Hope that helps.