SOLUTION: What expression should be on the blank, fx + 3y, ____, 5v - x formed an arithmetic sequence? Show full solution.

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Question 1196372: What expression should be on the blank, fx + 3y, ____, 5v - x formed an arithmetic sequence? Show full solution.
Answer by ikleyn(52790) About Me  (Show Source):
You can put this solution on YOUR website!
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The expression in the blank must be the arithmetic mean of the first and the third terms.


See the lesson
    - One characteristic property of arithmetic progressions
in this site.