solve plz by elimination method 4x+9y=30xy and 5y – 3x = xy​

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solve plz by elimination method 4x+9y=30xy and 5y – 3x = xy​

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Piper 4 months 2022-01-06T19:02:55+00:00 1 Answer 0 views 0

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    2022-01-06T19:04:35+00:00

    Answer: 4x+9y=30xy——1

    5y-3x=xy———–2

    Step-by-step explanation:multiplying eqyuation 2 by 4 and equation 1 by 3

    Thus we get the equations

    12x+27y=90xy

    20y-12x=4xy

    On adding these equations we get

    12x+27y=90xy

    -12x+9y=4xy

    Thus on adding we get 0+36y=94xy

    Thus 36y=94xy

    y=94/36

    y=47/18

    Substituting y in equation 4x+9×47/18=30×47/18

    4x+47/2=15×47/9

    4x=709/9-47/2

    4x=995/18

    x=995/18×4

    x=995/72

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