Respostas

2013-10-02T17:14:14-03:00

a)

6 5 3
4 2 8
1 7 6
 6 5 3
4 2 8


72+84+40-(6+336+120)
160-462
-302

b)

-2 4 8

4 -3 1

7 6 2

-2 4 8

4 -3 1

 

12+192+28 -( 168-12+32)

232-168+12-32

232-200

32

aonde vc tirou esse160 e esse 200