Question

Help... Please...

Answer 1

Solve each system by elimination.
\[x - y + z = -1\]
\[x + y + 3z = -3\]
\[2x - y + 2z = 0\]

Answer 2

May I help?

Answer 3

Go ahead.
I'm trying to upload my work to the computer to show what I have done so far.

Answer 4

Thank you.

Answer 5

can you add the eq1 and eq2 together, then eq2 and eq3 together?
You will get two eqs with two variables x and z
Do it and please share your work

Answer 6

There's what I had BEFORE i posted.

Answer 7

@BraydonLevi99

Answer 8

After getting x and z, easily substitute with them in any equation of 1, 2, or 3
You will get y.


Congratulations!

Answer 9

But, in the back of my book it doesn't have those answers.

Answer 10

You made a mistake, look at where you worked out z and you'll see it.

Answer 11

z = -3?

Answer 12

yes
z=-3

Answer 13

Is that correct, @agent0smith ?

Answer 14

Yes

Answer 15

Okay, now what do I do?

Answer 16

Finish.

Answer 17

x
then
y

Answer 18

Sub z into which equation?

Answer 19

4 or 5 or 6 or 7

Answer 20

Whichever one allows you to find something.

Answer 21

If z = -3 and x = 4, solve for z.

@BraydonLevi99

Answer 22

Correct.