Hi,
glen is 3 yrs older than his brother
Let x represent brother's age and Glen's (x+3)
Question states***
x + 4 + (x+3+4) = 33 ****
Solving for x
2x = 22
x = 11 brothers age now. Glen is now 14. (2years ago they were: 9 & 12)
CHECKING our Answer***
15 + 18 = 33