Hi having trouble with this equation:

I have tried using the subsitution and elimatnation method but still cannot get the correct asnwer to what the book has.

which is

Hope someone can help me.

P.S

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- Nov 28th 2009, 07:24 PMPaymemoneySimultaneous Linear Equation
Hi having trouble with this equation:

I have tried using the subsitution and elimatnation method but still cannot get the correct asnwer to what the book has.

which is

Hope someone can help me.

P.S - Nov 28th 2009, 07:33 PMRoam
Did you try rearranging it into:

2x+5y=11

7x-3y=18

? - Nov 28th 2009, 07:43 PMPaymemoney
yes, i have tried that using elimination method

- Nov 28th 2009, 07:48 PMRoam
Use the equations I gave you in my last post, put them in a 2x3 matrix:

2 5 3

7 -3 18

Row-reduce it and you will end up with:

1 0 3

0 1 1

Which means x=3 and y=1. - Nov 28th 2009, 08:01 PMPaymemoney
thanks i worked it out.