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X + 1 = Numero intermedio (Segundo Numero)
X + 2 = Numero Mayor (Tercer numero)
X + (X + 1) + (X + 2) = 90
X + X + X + 1 + 2 = 90
3X + 3 = 90
3X = 90 - 3
3X = 87
X = 87/3
X = 29
X + 1 = 29 + 1 = 30 Numero Intermedio
X + 2 = 29 + 2 = 31 Numero Mayor
29 + 30 + 31 = 90
Los numeros son: 29, 30, 31
Resolvemos...
s + (s + 1) + (s + 2) = 90
s + s + 1 + s + 2 = 90
s + s + s + 1 + 2 = 90
3s + 3 = 90
3s = 90 - 3
3s = 87
s = 87/3
s = 29
Reemplazando para calcular los números.
s + 1 = 29 + 1 = 30
s + 2 = 29 + 2 = 31
Respuesta.
Los números que buscas son: 29, 30 y 31
El número intermedio es 30