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

    Dec 3, 2011, 11:01 AM
    Solve by elimination, how do I solve this?
    -2x - 8y = 22
    -6x -y = 20
    vivekjha25's Avatar
    vivekjha25 Posts: 1, Reputation: 1
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    #2

    Dec 9, 2011, 02:09 PM
    You have to eliminate one of the two variables from one equation using the other. For instance, in your given equation ,
    -6x-y = 20
    can be written as
    -y = 20 + 6x
    y = -6x - 20
    Now we can put this value of y into the first equation
    -2x - 8y = 22
    putting y = -6x-20
    -2x-8(-6x-20)=22
    now the equation can be easily solved for x as y has been eliminated.
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