document.write( "Question 934468: solvex,y,z using matrix 3x-4y-z=-1
\n" ); document.write( " x=y-z=-2
\n" ); document.write( " 2x-5y=2z=13
\n" ); document.write( "

Algebra.Com's Answer #567487 by MathLover1(20850)\"\" \"About 
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3x-4y-z=-1
\n" ); document.write( "x=y-z=-2.....I believe after x comes + sign
\n" ); document.write( "2x-5y=2z=13...after 5y comes + sign\r
\n" ); document.write( "\n" ); document.write( "\"3x-4y-z=-1\"
\n" ); document.write( "\"x%2By-z=-2\"
\n" ); document.write( "\"2x-5y%2B2z=13+\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Initial Matrix
\n" ); document.write( "\"3\" \"-4\" \"-1\" \"-1\"
\n" ); document.write( "\"1\" \"1\" \"-1\" \"-2\"
\n" ); document.write( "\"2\" \"-5\" \"2\" \"13\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Taking matrix to echelon form:\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "multiplying row \"1\" by 0.3333}}}
\n" ); document.write( "adding \"-1\" times row \"1\" to row \"2\"
\n" ); document.write( "adding \"-1\" times row \"1\" to row \"3\"
\n" ); document.write( "multiplying row \"2\" by \"0.4286\"
\n" ); document.write( "adding \"2.3333\" times row \"2\" to row \"3\"
\n" ); document.write( "multiplying row \"3\" by \"0.5\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"1\" \"-1.3333\" \"-0.3333\" \"-0.3333\"
\n" ); document.write( "\"0\" \"1\" \"-0.2857\" \"-0.7143\"
\n" ); document.write( "\"0\" \"0\" \"1\" \"6\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Taking matrix to reduced echelon form:\r
\n" ); document.write( "\n" ); document.write( "adding 1.3333 times row 2 to row 1
\n" ); document.write( "adding 0.7143 times row 3 to row 1
\n" ); document.write( "adding 0.2857 times row 3 to row 2\r
\n" ); document.write( "\n" ); document.write( "Reduced echelon form:\r
\n" ); document.write( "\n" ); document.write( "\"1\" \"0\" \"0\" \"3\"
\n" ); document.write( "\"0\" \"1\" \"0\" \"1\"
\n" ); document.write( "\"0\" \"0\" \"1\" \"6\"\r
\n" ); document.write( "\n" ); document.write( "Result:
\n" ); document.write( "\"x+=+3\"
\n" ); document.write( "\"y=+1\"
\n" ); document.write( "\"z=+6\"
\n" ); document.write( "
\n" ); document.write( "
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