document.write( "Question 421046: I need help with this problem\r
\n" ); document.write( "\n" ); document.write( "x + y + z = 0
\n" ); document.write( "x – y – z = 6
\n" ); document.write( "-x + y – z = 4
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Algebra.Com's Answer #294057 by richard1234(7193)\"\" \"About 
You can put this solution on YOUR website!
For each pair of equations, you can add the two equations to produce a single-variable equation that can easily be solved for a single variable. \n" ); document.write( "
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