SOLUTION: Extrememly confused, help please! Solve each system in three variables 14)2x-y+3z=14 x+y-2z=-5 3x+y- z=2 18) x-3y+2z=-11 2x-4y+3z=-15 3x-5y-4z=5

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Extrememly confused, help please! Solve each system in three variables 14)2x-y+3z=14 x+y-2z=-5 3x+y- z=2 18) x-3y+2z=-11 2x-4y+3z=-15 3x-5y-4z=5      Log On


   

Question 187101This question is from textbook
: Extrememly confused, help please!
Solve each system in three variables
14)2x-y+3z=14
x+y-2z=-5
3x+y- z=2


18) x-3y+2z=-11
2x-4y+3z=-15
3x-5y-4z=5 This question is from textbook

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Solve each system in three variables
14)2x-y+3z=14
x+y-2z=-5
3x+y- z=2
---------------
I used a matrix method to get:
x = 2
y = -1
z = 3
==================================================

18) x-3y+2z=-11
2x-4y+3z=-15
3x-5y-4z=5
-----------------------
Using a matrix method I got:
x = 1
y = 2
z = -3
=================================
Cheers,
Stan H.