Respuesta :

Answer:

x = 7

Step-by-step explanation:

1. Add all of the expressions.

(12x - 1) + (7x+4) + (6x + 2)

25x + 5

2. Set the expression equal to 180.

25x + 5 = 180

3. Solve for x.

25x + 5 = 180

25x = 175

x = 7