Respuesta :

Let the number be x.

1st number = x
2nd number = x + 2
3rd number = x + 4

x + x + 2 + x + 4 = -9
3x + 6 = -9
3x = -15
x = -5


1st number = x = -5 
2nd number = x + 2 = -3
3rd number = x + 4 = -1

Answer: The numbers are -1, -3, and -5

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