Question

Hey I was just wondering if someone could help with this question
2y+z=3-3x
x-3y=4-z
-6x-4y=2z+1
Directions are to solve the following system of equations and all answers must be in simplest form.

Answer 1

where ya stuck on it?

Answer 2

first thing to do is set it up so it looks normal to work with

3x +2y +z = 3
x -3y +z = 4
-6x -4y -2z = 1

Answer 3

Well I first fixed the equations so variables would be on one side
The i used the first and second equation to to try and elminate the variables but i ended up elminating all the variables somehow

Answer 4

lets kill the xs lol

Answer 5

ok lol

Answer 6

or you wanna do the zs?

Answer 7

zs look precarious, go in for the kill

Answer 8

ok zz it is

Answer 9

you would get -2x-5y=1 if you use the first and third equation

Answer 10

3x +2y +z = 3
-x +3y -z = -4
--------------
2x +5y = -1


-6x -4y -2z = 1
2x -6y +2z = 8
----------------
-4x -10y = 9

Answer 11

ok i get that then you do those two together right?

Answer 12

2x +5y = -1 <- death to ys :)
-4x -10y = 9


4x +10y = -2
-4x -10y = 9
----------------
yeah, these lines are parallel to each other lol

Answer 13

there is no solution to the system; it happens :)

Answer 14

same slopes; different points...

Answer 15

ok thank you soo much

Answer 16

I thought there was something wrong when they all canceled

Answer 17

lol

Answer 18

youre welcome :) and quit breaking the math...others have to use it lol

Answer 19

ha ha

Answer 20

I think i can figure the rest out now

Answer 21

thanks again :)

Answer 22

come back now ya hear....we got all the right answers :)

Answer 23

def will it was a big help