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6 November, 03:35

The sum of the reciprocal of a number and the reciprocal of 2 less than the number is 7 times the reciprocal of the original number. find the original number.

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  1. 6 November, 05:33
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    1/n+1 / (n-2) = 7/n

    1 / (n-2) = 7/n-1/n

    1 / (n-2) = 6/n

    n=6 (n-2)

    n=6n-12

    5n=12

    n=12/5
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