SOLUTION: Hello, I am trying for hours to find the solution for the following equation. Unfortunately I am getting always a different answer. Can anybody help me solve this problem? x+

Algebra ->  Linear-equations -> SOLUTION: Hello, I am trying for hours to find the solution for the following equation. Unfortunately I am getting always a different answer. Can anybody help me solve this problem? x+      Log On


   

Question 313934: Hello,
I am trying for hours to find the solution for the following equation.
Unfortunately I am getting always a different answer. Can anybody help me solve this problem?
x+y+z+u=1
2x+3y-4z+5u=2
3x-4y-3z+6u=0
Thanks a million in advance
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!

system%28x%2By%2Bz%2Bu=1%2C%0D%0A2x%2B3y-4z%2B5u=2%2C%0D%0A3x-4y-3z%2B6u=0%29 

The augmented matrix is:



-2*R1+R2->R2
-3*R1+R3->R3



-1*R2+R1->R1
 7*R2+R3->R3



-1%2F48*R3->R3



-7*R3+R1->R1
 6*R3+R2->R2



Rewrite as this system of equations:



Simplify:



Solve for x, y and z




Let u=k, where k can represent any arbitrary
value, and we have this solution:



Edwin