Question

Solve the system of equations.
2x-4y+3z=-8
x+3y-2z=9
3x+2y+z=13

Answer 1

2x-4y+3z=-8
x+3y-2z=9
3x+2y+z=13
Correct?

Answer 2

correct!!

Answer 3

what do you need help with if you said it was correct?

Answer 4

that was the question i need to solve the systems

Answer 5

anyways
you can use Gaussian elimination to solve this

x + y + z = k
x + y + z = k
x + y + z = k

you want it to look like this
(k = constant value )

x + y + z = k
0 + y + z = k
0 + 0 + z = k

example:


just a name i am giving it
|
V
R1: [ 2 x + 6 y + 1z = 1 ]
R2 : 4x + 4y + 2z = 2
R3 : [ 2 x + 2y + 3z = 3 ]

I want to use first (R)ow to cancel out multiply it with -1
i want to eliminate the 2 in R3
-1(R1) + R3 =

R1: 2 x + 6 y + 1z = 1
R2 : 4x + 4y + 2z = 2
R3 : 0 x + 2y + 3z = 3

------------------------------

you want to put it in this form so you can use the
z
substitute and solve

x + y + z = 1
0 + y + z = 2
0 + 0 + z = 3

Answer 6

wait what? im so confused

Answer 7

my mom is even confused

Answer 8

I hope this helps you! Let me know if you have any other problems like this, I would be glad to help.