Respostas

2013-06-12T20:48:27-03:00

(-2) + (-3).(-2)^-1 : (-3)^1
-2 + (-3).1/2 : -3
-2 -3/2 : -3
-4/2 - 3/2 : -3
-7/2 : -3
-7/2 .-1/3
7/6

2013-06-12T21:15:37-03:00

(2-3.2-2)-1

(2-6-2)-1

(-4-2)-1

-6-1

-7