Question 175229
System of equations 
{{{system(-4x+4y-2z=-8,-3x-y+4z=0,2x-2y+3z=-4)}}} 

I dont understand the steps to this i always come out with a diffrent answer then one of the choices. So if u could please help. Thanks 
<pre><font size = 4 color = "indigo"><b>

There are half a dozen ways to solve a system of equations:

1. elimination and substitution
2. triangular method
3. Cramer's rule 
4. Gaussian elimination using augmented matrices with back-substitution
5. Gaussian elimination using the row-reduced-echelon form
6. the AX=B matrix method using the inverse matrix.

Please post again telling what method you are studying. and
we can help you with that method.

The solution is {{{matrix(1,7,
 
   "(x,", "y,", "z)",   "=",   "(-3,", "-7,", "-4)" )}}}

Edwin</pre>