x-3y=14 -(1)

4x+2y=0 -(2)

What is x & y?

thanks.

Printable View

- Dec 1st 2009, 01:25 AMs2951Simultaneous Equation
x-3y=14 -(1)

4x+2y=0 -(2)

What is x & y?

thanks. - Dec 1st 2009, 01:36 AMStroodle
Which part are you having trouble with?

From the first equation you can see that

So plug into the second equation in the place of then solve that for . Once you have the value of plug that back into either equation to get the value of .

Let us know if you have trouble with this. - Dec 1st 2009, 01:38 AMmrmohamed
- Dec 1st 2009, 01:46 AMs2951
- Dec 1st 2009, 01:54 AMBacterius
Wouldn't be useful here. Elimination method is only useful when the fact of adding or substracting together both equations gets rid of an unknown (like in the first one and in the second). Here you wouldn't get anything useful [I never ever use the elimination method, oddly enough I prefer using substitution in all problems ...] but if you are asked to do the Elimination method ...

- Dec 1st 2009, 02:53 AMRaoh

Gauss Elimination,

Therefore,the solution is .