SOLUTION: Charles is x years old now.Express his age12 years ago.

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Question 1015421: Charles is x years old now.Express his age12 years ago.
Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
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Charles is x years old now.Express his age 12 years ago.
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x-12, if x >=12 (13?).