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Find the value of r in the following expression.

$$(J - p - r - s)/q + (J - p - q - s)/r + (J - q - r - s)/p + (J - p - q - r)/s = 4$$

$J, p, q, r, s$ are real and $p + q + s = 3$.

Find the value of $r$.

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    The answer given in book is 1.2012-07-14
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    Why are people downvoting my question due to no reason?2012-07-14
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    Probably because it is rude to phrase your post as a command, rather than a request for help. **Also, to get the best possible answers, you should explain what your thoughts on the problem are so far**. That way, people won't tell you things you already know, and they can write answers at an appropriate level; also, people are much more willing to help you if you show that you've tried the problem yourself.2012-07-14

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