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.
Hope someone can help me.
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Did you try rearranging it into:
yes, i have tried that using elimination method
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.
thanks i worked it out.
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