Respostas

  • Usuário do Brainly
2014-05-04T21:21:50-03:00
+ (- 2) - (+  2) - (- 8) + (+ 8) =
- 2 - 2 + 8 + 8 =
- 4 + 8 + 8 =
4 + 8 =
12
2014-05-04T21:29:49-03:00
+(-2)-(+2)-(-8)+(+8)
-2-2+8+8
-4+16
16-4
12
1 4 1