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necesito resolver las siguientes operaciones
8 - 11 =
11 - 8 =
- 8 - 11 =
21 - 0 =
0 - 21 =
14 -15 =
- 2- 2 =
5 - ( - 5 ) =
- 5 + ( - 5 ) =
5 + ( - 5 ) =
5 × - 5 =
- 5 × - 5 =
- 10 + ( - 2 ) =
10 - ( - 2 ) =