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El número es = s
El doble es = 2s
s + 2/3 = 2s
(s * 3 + 2)/3 = 2s
(3s + 2)/3 = 2s
3s + 2 = 3 (2s)
3s + 2 = 6s
3s - 6s = - 2
- 3s = - 2
s = -2/-3
s = 2/3
Respuesta.
El número es 2/3