document.write( "Question 636091: using x,y,and z as variables write the system for linear equations
\n" ); document.write( "[9,1,0,8,|6]
\n" ); document.write( "[-1,5,1,0|-12]
\n" ); document.write( "[7,0,0,3|-9]
\n" ); document.write( "[0,4,0,-4|8]
\n" ); document.write( "

Algebra.Com's Answer #400721 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
The matrix \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "turns into the system of equations\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Note: there are 4 columns before the augmented part (or column), so I had to use 4 variables instead of 3. Maybe there's a typo somewhere in the problem?
\n" ); document.write( "
\n" );