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La mitad = z/2
La tercera parte = z/3
El doble = 2z
Resolvemos :
z + z/2 + z/3 = 2z - 2
saca el mcm de 2 y 3 que es = 6
((2 * 3) z + 3z + 2z)/6 = 2z - 2
(6z + 3z + 2z)/6 = 2z - 2
(11z)/6 = 2z - 2
11z = 6 (2z - 2)
11z = 12z - 12
11z - 12z = - 12
- z = - 12
z = 12
Solución : El número es = 12