Question

solve each system analytically. if the solution is dependent write solution set in terms of the variable z.
x+y+z=2
2x+y-z=5
x-y+z=-2

I keep getting lost

Answer 1

Have you learned how to solve systems of equations using matrices?

Answer 2

I do not believe so. what is a matrice?

Answer 3

A matrix is a way of representing a bunch of numbers. You don't need to worry about it if you haven't heard of it

Answer 4

I would use the elimination method for systems of equations to start

Answer 5

x=1
z=-1
y=2

Answer 6

@JULIANCHICO it is against the rules to provide the answer straight out. From the code of conduct:

"Don't just provide the answer to a problem when someone else is in the middle of helping! But if you want to help, by all means, join in!"

Answer 7

Because the first equation and last equation both have positive x and positive z, I would combine those by multiplying one by negative one first:

equation 1, multiplied by negative one: -x-y-z=-2
equation 3: x-y+z=-2

You can then combine them:

(-x-y-z=-2)
+ (x-y+z=-2)
-------------
-2y=-4

Answer 8

That can get you strated @angelabink

Answer 9

my bad @cholo71796

Answer 10

ok that is a good start I will try from there

Answer 11

ty