Question

I need help with systems of equations...

Answer 1

use substitution or elimination (and there are other methods for order three and higher)

Answer 2

Its 3
x-2y+2z=8
3x+y-z=3
-x-3y+2z=6

Answer 3

I have no idea how to solve any of it...

Answer 4

First add 1st and 3rd to get a relation in y and z. Then use any two to eliminate x. Then solve for y and z.

Answer 5

So add x-2y+2z=8 and -x-3y+2z=6?

Answer 6

Yes :)

Answer 7

So is it -5y+4z=14 or is it y+4z=14?

Answer 8

The first one is right :)

Answer 9

Okay thats what I got then what do I do from there?

Answer 10

So now for a second relation, multiply equation no 3rd by 3. Then add the eqn 2nd and 3rd

Answer 11

What????