document.write( "Question 472276: I have started the problem but am lost as to how to continue.
\n" );
document.write( "4x − y = 2
\n" );
document.write( "8x + 10y = −4\r
\n" );
document.write( "\n" );
document.write( "This was the problem I was given and was asked to use the Gauss-Jordan method to find the solution to the system of equations. \r
\n" );
document.write( "\n" );
document.write( "So far I did the first step but I need help understanding the steps that follow. \n" );
document.write( "
Algebra.Com's Answer #323825 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! 4x − y = 2 \n" ); document.write( "8x + 10y = −4 \n" ); document.write( "---------------- \n" ); document.write( "Subtract 2 times the 1st equation from the 2nd to get: \n" ); document.write( "4x - y = 2 \n" ); document.write( "0x +12y=-8 \n" ); document.write( "---- \n" ); document.write( "Divide thru the 2nd equation by 12 to get: \n" ); document.write( "4x - y = 2 \n" ); document.write( "0 + y = -2/3 \n" ); document.write( "---- \n" ); document.write( "Add the 2nd equation to the 1st to get: \n" ); document.write( "4x + 0 = 4/3 \n" ); document.write( "0 + y = -2/3 \n" ); document.write( "----- \n" ); document.write( "Divide thru the 1st equation by 4 to get: \n" ); document.write( "x + 0 = (1/3) \n" ); document.write( "0 + y = (-2/3) \n" ); document.write( "==== \n" ); document.write( "That is the final answer: \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |