Răspuns :
-2 + ( - 1) + 0 + 1 + 2 + 3 =
- 2 - 1 + 0 + 1 + 2 + 3 =
3 + 1 + 2 + 3 =
- 2 + 2 + 3 =
0 + 3
= 3
- 2 - 1 + 0 + 1 + 2 + 3 =
3 + 1 + 2 + 3 =
- 2 + 2 + 3 =
0 + 3
= 3
Răspuns:
-2 + (-1) +0+1+2+3
-3 + 0 + 1 + 2 + 3= -3 +1 +2 +3
-2+2+3
= 3