Respuesta :

Answer:

x = 0

Step-by-step explanation:

2x + 7 - 5x + 8 = 3 (5 + 6x) - 12x

2x + 7 - 5x + 8 = 15 + 18x - 12x

2x - 5x - 18x + 12x = 15 - 7 - 8

- 9x = 0

- x = 0/9

- x = 0

x = 0