what is the sum

Question

a.1/2b+b/2
b, b+1/2/2b+2
c, 2b 1/4
d. b^2+ 1/2b

Answer 1

a. 1/2b + b/2 = 1/2b + 1/2b = b

b. b + 1/2 / 2b + 2 = b + 1/2 / 2b + 2 = (2b + 1) / (4b + 4)

c. 2b 1/4 = 2b + 1/4

d. b^2 + 1/2b = b^2 + 1/2b