SOLUTION: im 3 years younger than twice my sisters age, and the sum of our age is 24, how old im i?

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Question 985423: im 3 years younger than twice my sisters age, and the sum of our age is 24, how old im i?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
x=sister's age
2x-3 is your age
x+2x-3=24
3x-3=24
3x=27
x=9 years
2x-3=15 years--your age.