Respuesta :

Answer:

9x-4

Step-by-step explanation:

Add 3x and 6x hope it help

Answer:

9x - 4

Step-by-step explanation:

3x + 6x - 4

First, combine like terms, so you would add 3x and 6x together to form 9x

9x - 4

Because you cannot simplify this equation any more, that is the answer

I hope this helps :)