document.write( "Question 929485: solve the system using a matrix equation:
\n" ); document.write( " -2x+y+2z=-13
\n" ); document.write( "-x-4y+z=-11
\n" ); document.write( " -y-z=0
\n" ); document.write( "

Algebra.Com's Answer #571041 by tommyt3rd(5050)\"\" \"About 
You can put this solution on YOUR website!
This is not what you asked for, but I hope it helps:\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );