SOLUTION: Christopher is x years old. How old will he be in 13 years? How old was he 4 years ago?

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Question 992799: Christopher is x years old. How old will he be in 13 years? How old was he 4 years ago?
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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Christopher is x years old. How old will he be in 13 years?    x + 13.


How old was he 4 years ago?                                    x - 4.