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
