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Math Help - algebra help

  1. #1
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    Smile algebra help

    solve by substitution
    4x-12y=5
    -x +3y = -1
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  2. #2
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    Quote Originally Posted by lizard4 View Post
    solve by substitution
    4x-12y=5
    -x +3y = -1
    -x = -1 - 3y \implies x = 3y+1

    Substitute that into the first equation,

    4(3y+1) - 12y =5

    Open,

    12y + 4 - 12 y = 5
    Combine,
    4 = 5
    Which is a contradiction.
    Thus it has no solutions.
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  3. #3
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    math

    thankyou
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