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9 August, 16:11

If x = 2y + 3 and 3x = 7 - 4y, what does x equal?

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Answers (2)
  1. 9 August, 18:56
    0
    x = 17/5

    Step-by-step explanation:

    Plug in 2y + 3 as x in the second equation and solve for y to get 1/5

    Then plug in y into the first equation and solve for x to get 17/5
  2. 9 August, 19:56
    0
    Step-by-step explanation:

    x=2y+3

    3x=7-4y

    Rearrange the numbers so they compare,

    x=2y+3

    3x=-4y+7

    Multiply the first equation by 2 (this is so the variable with y matches in both equations)

    2x=4y+6

    3x=-4y+7

    Add the two equations together

    2x=4y+6

    +

    3x=-4y+7

    5x=13

    Divide both sides by 5 to isolate x

    x=13/5

    Simply the equation

    x=2 3/5
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