Respuesta :

Answer: -8x

Step-by-step explanation:

First, we need to take our given numbers

-12x+5x-x

Now let's start with the start of the equation

-12x + 5x = -7x

Now we take -7x and -x

-7x - x = -8x

Answer : -8x

-12x + 5x = -7x
-7x - x = -8x