Question

Efetue as operações

a) -1/3 +1/2=
b) -3/5 -1/2=
c) +4/3 -1/7=
d -1/3 -1/2=

Answer 1

Denominadores diferentes é necessário fazer o MMC

a) -1/3+1/2= -2/6+3/6=1/6
b) -3/5-1/2= -6/10-5/10=-11/10
c)4/3-1/7=28/21-3/21=25/21
D)-1/3-1/2=-2/6-3/6=-5/6

Answer 2

OI

a) - 1 / 3 + 1 / 2→o mmc de (3,2) = 6

- 2 + 3/6

1/6

b) - 3 / 5 - 1 / 2→o mmc de ( 5,2) = 10

- 6 - 5/10

- 11/10

c) 4 / 3 - 1 / 7→o mmc de (3,7) = 21

28 - 3/21

25/21

d) - 1 / 3 - 1 / 2→o mmc de (3,2) = 6

- 2 - 3/6

- 5/6

Espero ter ajudado.