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Ecuación :
4x - 8 = 2(x+1)
4x - 8 = 2x + 2
2x = 10
x = 5
4s - 8 = 2 (s + 1)
4s - 8 = 2s + 2
4s - 2s = 2 + 8
2s = 10
s = 10/2
s = 5
Respuesta.
El número es 5