Respuesta :

Answer:

Step-by-step explanation:

-2x + 9 < x - 9                     Add 9 to both sides

-2x + 9 + 9 < x - 9 + 9        Combine

-2x + 18 < x                         Add 2x to both sides

-2x+2x + 18 < x + 2x           Combine

18 < 3x                                 Divide by 3

18/3 < 3x/3

6 < x