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    Sharpe's Avatar
    Sharpe Posts: 8, Reputation: 1
    New Member
    		  
    #1

    Jul 5, 2007, 02:29 PM
    Solve the Follwing system of equations
    Hey I need so help bad!
    3x=-12
    1=x+y+2z
    2x-y=-9
    I have tried the 5 or six times but I can never get the right answer...
    I need help...

    Sorry I forgot to add the 2z...
    vball43's Avatar
    vball43 Posts: 76, Reputation: 4
    Junior Member
    		  
    #2

    Jul 5, 2007, 02:37 PM
    x=-4
    y=-10
    makdan's Avatar
    makdan Posts: 46, Reputation: 3
    Junior Member
    		  
    #3

    Jul 7, 2007, 10:37 AM
    Quote Originally Posted by Sharpe
    Hey i need so help bad!!
    3x=-12
    1=x+y+2z
    2x-y=-9
    I have tried the 5 or six times but i can never get the right answer...
    I need help...

    Sorry i forgot to add the 2z...
    From Eq 1, x = -4.

    In Eq 3, substitute -4 for x, and solve for y =1.

    In Eq 2, substitute known values for x and y, and solve for z.
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