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Math Help - Help! Solving of Equations by the Elimination Method

  1. #1
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    Help! Solving of Equations by the Elimination Method

    Please help me with this given equations.

    click on the attachment

    thnx
    Attached Thumbnails Attached Thumbnails Help! Solving of Equations by the Elimination Method-given-equations.jpg  
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by Aussieboy View Post
    Please help me with this given equations.

    click on the attachment

    thnx
    These are all essentialy the same so I will show how to solve one of them and leave the rest for you.

    1)

    3x + 2y = -2
    4x - 5y = 5

    Choose one abd rearrange into the form y = ... Here I will use the second.

    y = -(5 - 4x)/5.

    Replace y in the other equation by this:

    3x - 2(5 - 4x)/5 = -2

    simplifing gives x=0, which we put back into y = -(5 - 4x)/5, to find y=-1.

    RonL
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