Respuesta :
The answer would be -6 or letter B because
[tex]x - 6 = - 12 \\ x - 6 + 6 = - 12 + 6 \\ x = - 6[/tex]
[tex]x - 6 = - 12 \\ x - 6 + 6 = - 12 + 6 \\ x = - 6[/tex]