Yeah, I understand that much. Well thank you for the help, and I guess I will just do it to where I get fractions and deal with her tomorrow. Thanks again.
I am not really sure, in all of the problems that she gave us on the worksheet, she said there are no fractions at all, but I don't understand how that can be. But she also said that you have to use two equations at a time and substitute and elimitate.
I know that I can do this using the first two equations..
2x-y+2z=15
(2)-x+(2)y+(2)z=(2)3
So then it would be..
2x-y+2z=15
-2x+2y+2z=6
After you can cancle out the 2x and -2x left with this..
-y+2z=15
2y+2z=6
An example of what I am doing would be this..
2x-y+2z=15
-x+y+z=3
3x-y+2z=18
My teacher had said that there are no fractions in the answer but I can't figure it out at all, and I have 8 of these problems. I have to solve for (x,y,z) with again no fractions. Please HELP!
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