Question 987107
<pre>
 x +  y -   z = -1
8x - 6y +  4z = 32
2x - 2y - 33z =  5

Surely you didn't copy this correctly, because
the solution to this system is

x = 452/241, y = -662/241,  z = 31/241

No teacher in their right mind would assign a
problem with such a ridiculous solution as that.

Edwin</pre>