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2 - 2n = 3n + 17
2 - 17 = 3n + 2n
- 15 = 5n
-15/5 = n
- 3 = n
Respuesta.
n = - 3
2 - 2n = 3n + 17
2 - 17 = 3n + 2n
-15 = 5n ---------> n = -3