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4 May, 03:55

Twice the difference of a number and 4 is equal to three times the sum of the number and 5 find the number

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  1. 4 May, 05:18
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    Twice the difference of a number and 4 is equal to three times the sum of the number and 5

    number - N

    find the number

    2 (N - 4) = 3 (N + 5)

    2N - 8 = 3N + 15

    -15 - 8 = 3N - 2N

    - 23 = N

    Check

    2 (N - 4) = 3 (N + 5)

    2 (-23 - 4) = 3 (-23 + 5)

    2 (-27) = 3 (-18)

    -54 = - 54
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