document.write( "Question 983143: x1-x2+2x3=0
\n" ); document.write( "4x1+x2+2x3=1
\n" ); document.write( "x1+x2+x3=-1
\n" ); document.write( "gauss jordan elimination method \n" ); document.write( "
Algebra.Com's Answer #604217 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
\"%28matrix%283%2C4%2C%0D%0A1%2C-1%2C2%2C0%2C%0D%0A4%2C1%2C2%2C1%2C%0D%0A1%2C1%2C1%2C-1%29%29\"
\n" ); document.write( "Replace R2 with 4*R3-R2,
\n" ); document.write( "\"%28matrix%283%2C4%2C%0D%0A1%2C-1%2C2%2C0%2C%0D%0A0%2C3%2C2%2C-5%2C%0D%0A1%2C1%2C1%2C-1%29%29\"
\n" ); document.write( "Replace R3 with R3-R1,
\n" ); document.write( "
\n" ); document.write( "Replace R3 with 2*R2-3*R3,
\n" ); document.write( "\"%28matrix%283%2C4%2C%0D%0A1%2C-1%2C2%2C0%2C%0D%0A0%2C3%2C2%2C-5%2C%0D%0A0%2C0%2C7%2C-7%29%29\"
\n" ); document.write( "Replace R2 with 7*R3-2*R2,
\n" ); document.write( "
\n" ); document.write( "Replace R1 with 21*R1+R2,
\n" ); document.write( "
\n" ); document.write( "Replace R1 with 6*R3-R1,
\n" ); document.write( "
\n" ); document.write( "Divide R1 by (-21), R2 by 21, and R2 by 7.
\n" ); document.write( "\"%28matrix%283%2C4%2C%0D%0A1%2C0%2C0%2C1%2C%0D%0A0%2C1%2C0%2C-1%2C%0D%0A0%2C0%2C1%2C-1%29%29\"
\n" ); document.write( "So,
\n" ); document.write( "\"x%5B1%5D=1\"
\n" ); document.write( "\"x%5B2%5D=-1\"
\n" ); document.write( "\"x%5B3%5D=-1\"\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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