let the son be x, and lebron be x+20.
in ten years, lebron would be x+20+10. there is also another given equation, which would mean that in ten years, he will also be 2(x+10), since he is twice the age of his son in ten years.
2(x+10)=x+20+10.
2x+20=x+30.
2x-x=-20+30.
x=10.
the son is ten, while lebron is 20. hope u understand xx
