document.write( "Question 275319: How do you solve this by elimination:\r
\n" ); document.write( "\n" ); document.write( "2x + 3y - z = -8
\n" ); document.write( "x - y - z = -2
\n" ); document.write( "-4x + 3y + z = 6 \r
\n" ); document.write( "\n" ); document.write( "Thank you! \n" ); document.write( "
Algebra.Com's Answer #200827 by Greenfinch(383)\"\" \"About 
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\n" ); document.write( "2x + 3y - z = -8
\n" ); document.write( "x - y - z = -2
\n" ); document.write( "-4x + 3y + z = 6\r
\n" ); document.write( "\n" ); document.write( "(1 - 2) x + 4y = -6
\n" ); document.write( "(1 + 3)-2x +6y = -2
\n" ); document.write( "2x + 8y = -12
\n" ); document.write( "14y = -14
\n" ); document.write( "y = -1\r
\n" ); document.write( "\n" ); document.write( "2x - 3 - z = -8
\n" ); document.write( "x + 1 - z = -2
\n" ); document.write( "-4x -3 +z = 6\r
\n" ); document.write( "\n" ); document.write( "2x - z = -5
\n" ); document.write( "x - z = -3
\n" ); document.write( "-4x + z = 9\r
\n" ); document.write( "\n" ); document.write( "4x - 2z = -10
\n" ); document.write( "-z = -1
\n" ); document.write( "z = 1\r
\n" ); document.write( "\n" ); document.write( "2x -3 -1 = -8
\n" ); document.write( "2x = -4
\n" ); document.write( "x = -2
\n" ); document.write( "so x= -2, y = -1, z = 1\r
\n" ); document.write( "\n" ); document.write( "Check in 2
\n" ); document.write( "-2 + 1 - 1 = -2 OK\r
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