Question

Dan is 4 years older than his brother Gabriel. Together their ages equal 22. How old is each boy?

Answer 1

An equation that would help is: 
(4 + x) + x = 22 
First subtract 4 from each side: 
2x = 18 
Divide each side by 2: 
x = 9 
Gabriel is 9, and since dan is 4 years older he is 13. Hope this helps!

Answer 2

(4+x)+x=22
= 4+2x=22
= 2x = 18
= x = 9.

Gabriel is 9 years old, and Dan is 4 + 9 or 13 years old.