Question

B) 3/4+1/2

C) 1/2+3/10

D)1/2+3/4

Answer 1

b) 3/4 + 1/2 
MMC de 4 e 2  = 4
3/4/1 + 1/2/2 = 3/4 + 2/4 = 5/4
c) 1/2 + 3/10
MMC de 2 e 10 = 10
1/2/5 + 3/10/1 = 5/10 + 3/10 = 8/10 = 4/5
d) idem a letra b, as frações estão apenas invertidas