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19 June, 11:44

If fifty-seven is added to four times a number, the result is - 7. What is the number?

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Answers (2)
  1. 19 June, 11:49
    0
    x (aka the number) = - 16

    This is because 4 times - 16 = - 64, and - 64 plus 57 = - 7.
  2. 19 June, 11:54
    0
    x = - 16

    Step-by-step explanation:

    4x + 57 = - 7

    subtract 57 to both sides and then solve for x

    4x + 57 - 57 = - 7 + - 57

    4x = - 64

    4x/4 = - 64/4

    x = - 16
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