Respuesta :

Answer:

B

Step-by-step explanation:

To solve this, you need to combine like terms (ie. 6 and 9 or 2x and 3x).

4x + x - 3 - 9 + 4x = 6

9x - 12 = 6

Answer:

4x + x - 3 - 9 + 4x = 6

= 9x - 12 = 6

That's option B

Hope this helps