Question

Alguem me ajuda
A) 12/5 +3/5
B)8/3+21/5
C) 1/5+1/8-2/3
D) 1/3-2/5+1/4
E) 1/2+2/3+4/3

Answer 1

Oi....

Resolução:

a)

12/5 + 3/5  ⇒mmc = 5

12 + 3/5

15/5

3

b)

8/3 + 21/5⇒mmc 3, 5 = 15

40 + 63/15

103/15

c)

1/5 + 1/8 - 2/3⇒mmc 5,8,3 = 120

24 + 15 - 80/120

39 - 80/120

- 41/120

d)

1/3 - 2/5 + 1/4⇒ mmc 3, 5, 4 = 60

20 - 24 + 15/60

35 - 24/60

11/60

e)

1/2 + 2/3 + 4/3

1/2 + 2 + 4/3

1/2 + 6/3

1/2 + 2⇒mmc = 2

1 + 4/2

5/2

Espero ter ajudado.