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23 August, 03:14

The variable x is twice the value of the variable y and the sum of x and y is 42 solve for x and y.

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Answers (2)
  1. 23 August, 05:26
    0
    x=28 x=14

    Step-by-step explanation:

    x+y=42

    2y=x

    My method of doing this is a little unorthodox so this is probably going to make no sense ... but here goes ...

    42/2=21

    21 * (2/3) = 14

    14*2=28
  2. 23 August, 06:01
    0
    Write two equations with the given information:

    1) x = 2y (x is twice the value of y)

    2) x + y = 42

    Replace x in the second equation with the value of x in the first equation:

    2y + y = 42

    Simplify:

    3y = 42

    Divide both sides by 3:

    y = 42 / 3

    y = 14

    Now we have the value for Y, solve for x by replacing y with 14:

    x = 2y

    x = 2 (14)

    x = 28

    X = 28 and y = 14
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