document.write( "Question 865697: How do you solve
\n" ); document.write( "x+2y+3z=11,
\n" ); document.write( "x+y+z=5,
\n" ); document.write( "2x+2y+z=3
\n" ); document.write( "using Matrices (Row Operations)? \n" ); document.write( "

Algebra.Com's Answer #522132 by richwmiller(17219) $\"\"$ $\"About$

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\n" ); document.write( "Add (-1 * row1) to row2
\n" ); document.write( "1 2 3 11
\n" ); document.write( "0 -1 -2 -6
\n" ); document.write( "2 2 1 3\r
\n" ); document.write( "\n" ); document.write( "Add (-2 * row1) to row3
\n" ); document.write( "1 2 3 11
\n" ); document.write( "0 -1 -2 -6
\n" ); document.write( "0 -2 -5 -19\r
\n" ); document.write( "\n" ); document.write( "Divide row2 by -1
\n" ); document.write( "1 2 3 11
\n" ); document.write( "0 1 2 6
\n" ); document.write( "0 -2 -5 -19\r
\n" ); document.write( "\n" ); document.write( "Add (2 * row2) to row3
\n" ); document.write( "1 2 3 11
\n" ); document.write( "0 1 2 6
\n" ); document.write( "0 0 -1 -7\r
\n" ); document.write( "\n" ); document.write( "Divide row3 by -1
\n" ); document.write( "1 2 3 11
\n" ); document.write( "0 1 2 6
\n" ); document.write( "0 0 1 7\r
\n" ); document.write( "\n" ); document.write( "Add (-2 * row3) to row2
\n" ); document.write( "1 2 3 11
\n" ); document.write( "0 1 0 -8
\n" ); document.write( "0 0 1 7\r
\n" ); document.write( "\n" ); document.write( "Add (-3 * row3) to row1
\n" ); document.write( "1 2 0 -10
\n" ); document.write( "0 1 0 -8
\n" ); document.write( "0 0 1 7\r
\n" ); document.write( "\n" ); document.write( "Add (-2 * row2) to row1
\n" ); document.write( "1 0 0 6
\n" ); document.write( "0 1 0 -8
\n" ); document.write( "0 0 1 7\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( " \n" ); document.write( "

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