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    bobbie1234's Avatar
    bobbie1234 Posts: 1, Reputation: 1
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    #1

    Feb 5, 2007, 12:52 PM
    Algebra - elimination
    My question is I have a problem to solve. X+Y=10 AND X-Y=6 by elimination but I don't understand how you can solve it by elimination because the signs are different
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Feb 5, 2007, 12:56 PM
    Simply add them together. The fact that the signs of y are different makes it easier.



    Add the second row to the first and eliminate the y.
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