Hi,
Let x represent Brad's age ⇒is Adams's age
Question States*** in 5 years...
(x+9) + 5 = 2(x+5)
x + 14 = 2x + 10
4 = x, Brad's age. Adam is 13
CHECKING our answer*** In 5 years, Adam will be double Brad's age.
18 = 2•9
Wish You the Best in your Studies.