Question

A)3/5 + 4/7=
B)1/5 + 6/7=
C)3/4 + 1/2=
D)6/8 + 5/6=
E)1/2 + 6/7=
F)5/8 + 5/8=
G)3/5 + 3/5=
H)1/2 + 2/5=
I)3/4 + 1/3

Answer 1

Vamos lá.

A)3/5 + 4/7=   21+20/35 = 41/35    O  mmc de 5 e 7 = 35

B)1/5 + 6/7=   7+30/35 = 37/35       O mmc de 5 e 7 = 35

C)3/4 + 1/2=  3+2/4 = 5/4               O mmc de 4 e 2 = 4

D)6/8 + 5/6=  18+20/24 = 38/24    simplifique 19/12   O mmc de 8 e 6 = 24

E)1/2 + 6/7=  7+18/14 = 25/14     O mmc de 2 e 7 = 14

F)5/8 + 5/8=  10/8 =  denominador igual conserva e soma o numerador. Simplifique 5/4

                                                     

G)3/5 + 3/5=  6/5 aqui a mesma coisa, só não dá pra simplificar.

H)1/2 + 2/5= 5+4/10 = 9/10 O mmc de 2 e 5 = 10

I)3/4 + 1/3 = 9+4/12 = 13/12 ) mmc de 4 e 3 = 12.

Espero ter ajudado