document.write( "Question 329154: determine whether -2, -2, -2 is a solution\r
\n" ); document.write( "\n" ); document.write( "x-y+z=-2
\n" ); document.write( "x+5y-z=-10
\n" ); document.write( "x+y-3z=3
\n" ); document.write( "

Algebra.Com's Answer #235868 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Substitute \"x=-2\", \"y=-2\", \"z=-2\" into each equation and verify that it solves the equation.
\n" ); document.write( "It's pretty straightforward.
\n" ); document.write( "\"-2-%28-2%29-2=-2\"
\n" ); document.write( "There's the first one, complete the left hand side and see if it equals the right hand side.
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