SOLUTION: Maggie's brother is three years younger than twice her age. The sum of their ages is 24. How old is Maggie?

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Question 905137: Maggie's brother is three years younger than twice her age. The sum of their ages is 24. How old is Maggie?
Answer by brichantai(17) About Me  (Show Source):
You can put this solution on YOUR website!
y=2x-3
x+y=24
x=24-y
y=2(24-y)-3
y=48-2y-3
3y=45
y=15
Maggie is 27