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12 July, 05:37

When the sum of a number and 7 is multiplied by 5, the result is 20 what is the number

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Answers (1)
  1. 12 July, 08:01
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    Hello from MrBillDoesMath!

    Answer:

    -3

    Discussion:

    Call the number "n". Then

    (n+7) * 5 = 20 = > (given)

    (n+7) = 20 * (1/5) = 4 = > (divide both sides by 5)

    n = 4 - 7 = - 3 (subtract 7 from both sides)

    Regards,

    MrB
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