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Numero menor = x
Numero del medio = x + 1
Numero mayor = x + 2
x + x + 1 +x + 2 = 2(3³) + 12
3x + 3 = 2(3*3*3) + 12
3x = 2(27) + 12 - 3
3x = 54 + 9
3x = 63
x = 63/3
x = 21
El numero mayor = x + 2 = 21 + 2 = 23
Respuesta.
El numero mayor es el 23