SOLUTION: Fred is seven years older than Ann . The sum of their ages is 31 . How old is Fred ?

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Question 1010536: Fred is seven years older than Ann . The sum of their ages is 31 . How old is Fred ?
Answer by Alan3354(69443) About Me  (Show Source):
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Fred is seven years older than Ann . The sum of their ages is 31 . How old is Fred ?
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F - A = 7
F + A = 31
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