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25 July, 16:43

Twice the diffrence of a number and 9 is equal to three times the sum of the number and 5. Find the number

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  1. 25 July, 16:55
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    2 (n-9) = 3 (n + 5)

    2n - 18 = 3n + 15

    2n - 3n = 15 + 18

    -n = 33

    n = - 33
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