Question

EFETUE AS SEGUINTES ADIÇOES
( + 5/8 ) + ( + 1/2 ) + ( -2/15)=
( + 1/2 ) + ( -1/3 ) + ( +1/5 )=
( -1/2 ) + ( -4/10 ) + ( +1/5 )=
( -3/5 ) + (+ 2) + ( - 1/3 )=

Answer 1

Olá...

a)

( + 5/8) + ( + 1/2) + ( - 2/15)

5/8 + 1/2 - 2/15⇒mmc = 120

75 + 60 - 16/12

119/120

b)

(+ 1/2) + ( - 1/3) + ( + 1/5)

1/2 - 1/3 + 1/5⇒mmc =30

15 - 10 + 6/30

11/30

c)

(- 1/2) + (- 4/10) + ( + 1/5)

- 1/2 - 4/10 + 1/5⇒mmc = 10

- 5 - 4 + 2/10

- 7/10

d)

(- 3/5) + ( + 2) + ( - 1/3)

- 3/5 + 2 - 1/3⇒mmc = 15

- 9 + 30 - 5/15

16/15

Espero ter ajudado.