how do i solve for this system of equations 11x-3y=-36 12y-9x=39 ? tried reordering the terms but what else?
Last edited by mr fantastic; August 10th 2010 at 05:03 AM. Reason: Re-titled.
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Originally Posted by gabriel how do i solve for this system of equations 11x-3y=-36 12y-9x=39 ? tried reordering the terms but what else? ...(1) ...(2) From (1) Then (2) Can you finish it from here?
yeppp i got thnx good refreshment to the dusty mind
Originally Posted by gabriel how do i solve for this system of equations 11x-3y=-36 12y-9x=39 ? tried reordering the terms but what else? The alternative method (the method used for more equations with more unknowns) is the elimination method... . Multiply the first equation by 4 to give Add the equations together . Substitute into one of the original equations... So the solution is .
Last edited by Prove It; August 10th 2010 at 12:02 AM.
Originally Posted by Prove It ... <=== unfortunately you made a small sign mistake here . Substitute into one of the original equations... . So the solution is . .
Yes I did, edited
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