Respuesta :

Answer:

x  =  − 4

Step-by-step explanation:

Answer:

x = -4

Step-by-step explanation:

First, add 7 to both sides:

7x - 7=  12x + 13

7x = 12x + 20

Subtract 12x from both sides:

-5x = 20

Divide each side by -5:

x = -4

So, the answer is x = -4