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    algebra1b's Avatar
    algebra1b Posts: 1, Reputation: 1
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    #1

    Feb 7, 2008, 07:15 PM
    graphing equations
    x+y=4
    2x+y=5
    msk's Avatar
    msk Posts: 59, Reputation: 3
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    #2

    Feb 9, 2008, 07:04 AM
    2x+y=5 --1
    x+y=4 ----2
    Subtracting equation 2 from 1 we get x=1,
    Substituting the value of x in equation 1 or 2 we get (2x1)+y=5 ory=5-2=3
    I thinkits clear.
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