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El numero = x
El sucesor = x + 1
2x + 4(x + 1) + x +1 = 216
2x + 4x + 4 +x + 1= 216
7x + 5 = 216
7x = 216 - 5
7x = 211
x = 211/7
Respuesta.
El numero es el 211/7