Respostas

2013-03-26T21:41:34-03:00

-2+3.(-1/2) : (-3)

-2-3/2 :3

-2-3/2 . 1/3

-2-1/2

R= -5/2

1 1 1
2013-03-26T22:33:45-03:00

-2+3.(-1/2) : (-3)

-2-3/2 :3

-2-3/2 . 1/3

-2-1/2

R= -5/2

1 5 1