document.write( "Question 607723: write the system as a matirx\r
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Algebra.Com's Answer #382870 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "x-3y+2z=-21\r\n" );
document.write( "   y-2z=12\r\n" );
document.write( "      z=2 \r\n" );
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document.write( " 1  	 -3  	 2  	 -21 \r\n" );
document.write( " 0  	 1  	 -2  	 12 \r\n" );
document.write( " 0  	 0  	 1  	 2 \r\n" );
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\n" ); document.write( "\n" ); document.write( "Now add 2 times the 3rd row to the 2nd row (and replace the second row with this result)\r
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document.write( " 1  	 -3  	 2  	 -21 \r\n" );
document.write( " 0  	 1  	 0  	 16 \r\n" );
document.write( " 0  	 0  	 1  	 2 \r\n" );
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\n" ); document.write( "\n" ); document.write( "Then add -2 times the 3rd row to the 1st row (and replace the first row with this result)\r
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document.write( " 1  	 -3  	 0  	 -25 \r\n" );
document.write( " 0  	 1  	 0  	 16 \r\n" );
document.write( " 0  	 0  	 1  	 2 \r\n" );
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\n" ); document.write( "\n" ); document.write( "Finally, add 3 times the 2nd row to the 1st row (and replace the first row with this result)\r
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document.write( " 1  	 0  	 0  	 23 \r\n" );
document.write( " 0  	 1  	 0  	 16 \r\n" );
document.write( " 0  	 0  	 1  	 2 \r\n" );
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\n" ); document.write( "\n" ); document.write( "The right hand column represents the solutions. So the solutions are x = 23, y = 16 and z = 2 \n" ); document.write( "
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