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Aplicas ley de signos
+ por + = +
- por - = +
+ por - = -
- por + = -
Resolvemos :
(- 3) + ( + 2) + (- 2)
- 3 + 2 - 2
- 3 - 2 + 2
- 5 + 2
- 3
Solución :
- 3