Answer:
g = 10.5
Step-by-step explanation:
8g - 6(2g + 7)
8g - 12g - 42
-4g = -42
2
8g - 6 (2g + 7)
2 (4g - 3 (2g + 7))
2 (4g - 6g - 21)
= 2 (- 2g - 21)