Question

calcule as expressões abaixo e simplifique.

a)1/2+3/2

b)4/6 - 1/6

c)3/4+1

Answer 1

a)1/2+3/2= 4/2= 2

b)4/6-1/6= 5/6

c)3/4+1= 3+4.1/4= 3+4/4=7/4

Answer 2

a) 1/2 + 3/2 =  5/2

b) 4/6 -1/6 =  3/6 =1/3

c) 3/4 + 1/1 = mmc entre 1 ,4 = 4 
    3/4 + 4/4 = 7/4