document.write( "Question 685476: Solve the system of linear equations using the Gauss-Jordan elimination method
\n" ); document.write( "x-2y=8; 3x+4y=4 \n" ); document.write( "

Algebra.Com's Answer #424440 by MathLover1(20849) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( " $\"x-2y=8\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"+3x%2B4y=4\"$
\n" ); document.write( "__________________\r
\n" ); document.write( "\n" ); document.write( "Add $\"%28-3+%2A+row1%29\"$ to $\"row2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"1\"$ | $\"-2\"$ | $\"8\"$ |
\n" ); document.write( " $\"0+\"$ | $\"10\"$ | $\"-20\"$ |\r
\n" ); document.write( "\n" ); document.write( "Divide $\"row2\"$ by $\"10\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"1\"$ | $\"-2\"$ | $\"8\"$ |
\n" ); document.write( " $\"0+\"$ | $\"1\"$ | $\"-2\"$ |\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Add $\"%282+%2A+row2%29\"$ to $\"row1\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"1\"$ | $\"0\"$ | $\"4\"$ |
\n" ); document.write( " $\"0\"$ | $\"1\"$ | $\"-2\"$ | \r
\n" ); document.write( "\n" ); document.write( "so, $\"x=4\"$ and $\"y=-2\"$ \r
\n" ); document.write( "\n" ); document.write( "check it on a graph:\r
\n" ); document.write( "\n" ); document.write( " $\"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+x%2F2-4%2C+-%283%2F4%29x%2B1%29+\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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