document.write( "Question 588053: Use row of operations to solve x+y+z=-5, x-y+3z=-1, 4x+y+z=-2
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Algebra.Com's Answer #374348 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!
Here is one exactly like it\r
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document.write( "Swap row 1 and 2 to get a 1 in the upper left corner\r\n" );
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document.write( "Multiply Row 1 temporarily by -2, getting \r\n" );
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document.write( "and add that to row 2:\r\n" );
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document.write( "Swap rows 2 and 3:\r\n" );
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document.write( "Multiply Row 2 temporarily by -3, getting \r\n" );
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document.write( "and adding that to row 3:\r\n" );
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document.write( "Mutiply row 3 by \r\n" );
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document.write( "Convert back into a system of equations:\r\n" );
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document.write( "or just\r\n" );
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document.write( "Substitute  from the bottom equation\r\n" );
document.write( "into the middle equation \r\n" );
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document.write( "Substitute  and \r\n" );
document.write( "into the top equation \r\n" );
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document.write( "So the solution is \r\n" );
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document.write( "Edwin

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