document.write( "Question 313929: Hello,
\n" ); document.write( "I am trying to figure out how to find the solution for this equation. \r
\n" ); document.write( "\n" ); document.write( "2x-y+3z=1
\n" ); document.write( "-x+2y-z=-2
\n" ); document.write( "x+y+2z=-1\r
\n" ); document.write( "\n" ); document.write( "Can anybody help me solve this problem?
\n" ); document.write( "thanks
\n" ); document.write( "

Algebra.Com's Answer #224437 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
2x - y + 3z = 1
\n" ); document.write( "-x +2y - z =-2
\n" ); document.write( "x + y + 2z = -1
\n" ); document.write( ":
\n" ); document.write( "No
\n" ); document.write( "Multiply the last equation by -1 and add and see what happens
\n" ); document.write( "2x - y + 3z = 1
\n" ); document.write( "-x +2y - z = -2
\n" ); document.write( "-x - y - 2z = 1
\n" ); document.write( "--------------------adding eliminates all three variables
\n" ); document.write( "
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