Answer:
8 years is around 2,920 days
Step-by-step explanation:
2/3(x + 7) = 10. Divide each side by 2/3.
x + 7 = 15. Subtract each side by 7.
x = 8
You need to be clearer on what the "roots" are, I haven't learned that term ever, but I think I know what you mean...