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Activity Discussion Math Solve for x and y Reply To: Solve for x and y

  • Raghav

    Member
    June 22, 2023 at 8:52 pm
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    ::

    Given,
    2x + 3y = 9 …(1)
    8x – 2y = 5 …(2)

    Let’s solve them with the help of elimination method. In order to do that we need cancel out any 1 of the element.

    Solution :-

    Multiply Eq (1) by 2 & Eq (2) by 3, we get

    4x + 6y = 18 ..(3)
    24x – 6y = 15 ..(4)

    Now Add Eq (3) & Eq (4), we get

    (4x + 6y) + (24x – 6y) = 18 + 15
    28x = 33
    x = 33/28 OR x = 1.17

    Using the value of x = 33/28 in Eq (1), we get
    2(33/28) + 3y = 9
    3y = 9 – 33/14
    3y = 93/14
    y = 31/14 OR y = 2.21

    Hence, Solved!

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