Question

ajuda, rápido pfvr

Encontre os valores das adições de frações:

A-) 2/3 + 4/3 B-) 3/5 + 2/7

C-) 1/9 + 5/3 D-) 1/9 + 2/7

E-) 7/2 + 2/6 F-) 4/5 + 1/10

G-) 1/3 + 5/6 + 2/9 H-) 5/4 + 3/8​

Answer 1

Resposta:

Explicação passo a passo:

A-) 2/3 + 4/3

= 6/3

= 2

B-) 3/5 + 2/7

Mmc (5,7)= 35

= (7.3+5.2)/35

= (21+10)/35

= 31/35

C-) 1/9 + 5/3

Mmc (9,3)=9

= (1+3.5)/9

= (1+15)/9

= 16/9

____________

D-) 1/9 + 2/7

Mmc (9,7)= 63

= (7.1+9.2)/63

= (7+18)/63

= 25/63

_________________

E-) 7/2 + 2/6 (:2)/(:2)

= 7/2 + 1/3

Mmc (2,3) = 6

= (3.7+2.1)/6

= (21+2)/6

= 23/6

________________

F-) 4/5 + 1/10

Mmc (5,10)=10

= (2.4+1.1)/10

= (8+1)/10

= 9/10

______________

G-) 1/3 + 5/6 + 2/9

Mmc (3,6,9)= 18

= (6.1+3.5+2.2)/18

= (6+15+4)/18

= 25/18

___________

H-) 5/4 + 3/8​

Mmc (4,8)= 8

=(2.5+1.3)/8

= (10+3)/8

= 13/8