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16 November, 10:22

One number is less than a second number. Twice the second number is 42 more than 4 times the first?

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Answers (1)
  1. 16 November, 12:51
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    Any pair of numbers (x, 21 + 2x).

    Step-by-step explanation:

    I am going to solve this question building a system of equations. We have that:

    The first number is x

    The second number is y.

    Twice the second number is 42 more than 4 times the first

    This means that:

    2y = 42 + 4x

    Dividing by 2

    y = 21 + 2x

    So the solution to this question is:

    Any pair of numbers (x, 21 + 2x).
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