Respuesta :

12x - 3x + 11 > 4x - (17 - 9x) =
9x + 11 > 4x - 17 + 9x =
9x + 11 > 13x - 17 =
11 + 17 > 13x - 9x
28 > 4x
28/4 > x
7 > x.....or x < 7
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