document.write( "Question 466168: solve the system using Gauss- Jordan elimination
\n" ); document.write( " -6x1 - 3x2 = 21
\n" ); document.write( " 2x1 + x2 =7 \n" ); document.write( "

Algebra.Com's Answer #319591 by robertb(5830) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"%28matrix%282%2C3%2C+-6%2C-3%2C21%2C2%2C1%2C7%29%29\"$
\n" ); document.write( "~ $\"%28matrix%282%2C3%2C+2%2C1%2C7%2C-6%2C-3%2C21%29%29\"$ , R1 <-> R2.\r
\n" ); document.write( "\n" ); document.write( "~ $\"%28matrix%282%2C3%2C+2%2C1%2C7%2C0%2C0%2C42%29%29\"$ ,after 3R1 + R2\r
\n" ); document.write( "\n" ); document.write( "~ $\"%28matrix%282%2C3%2C+1%2C1%2F2%2C7%2F2%2C0%2C0%2C1%29%29\"$ , after R1/2 and R2/42\r
\n" ); document.write( "\n" ); document.write( "~ $\"%28matrix%282%2C3%2C+1%2C1%2F2%2C0%2C0%2C0%2C1%29%29\"$ , after -7R2/2 + R1\r
\n" ); document.write( "\n" ); document.write( "The matrix is in reduced row echelon form. The last row says that the system is inconsistent, and there is no solution set. \n" ); document.write( "

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