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    zzdreamerzz's Avatar
    zzdreamerzz Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Sep 15, 2007, 12:33 PM
    hi I'm new to this website nice to meet u, I rele need help on this it rele confuses me and seems very difficult so can u help me out?

    -3=2m-3n
    2m+n=-15
    s_cianci's Avatar
    s_cianci Posts: 5,472, Reputation: 760
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    #2

    Sep 15, 2007, 12:40 PM
    Combine the equations so that either the m or n-terms cancel each other out. Solve for the remaining variable. You'll want to multiply each equation by certain constants so that either the m or n-terms are opposites of each other. Then plug the obtained value in to one of the original equations to solve for the other variable.
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #3

    Sep 15, 2007, 11:48 PM
    take the first equation and swap the left and right sides over. Then subtract the equations from each other and you should end up with an equation you can solve.
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