document.write( "Question 979254: Solve the system of equations by the method of elimination.\r
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document.write( "-x + 4y = -11
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document.write( "11x - y = -8 \n" );
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Algebra.Com's Answer #600523 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! -x + 4y = -11 \n" ); document.write( "11x - y = -8; multiply this one by 4.\r \n" ); document.write( "\n" ); document.write( "-x + 4y = -11 \n" ); document.write( "44x-4y=-32 ; now add the two and y disappears\r \n" ); document.write( "\n" ); document.write( "43x=-43 \n" ); document.write( "x=-1\r \n" ); document.write( "\n" ); document.write( "substitute in either one. I will use the first. \n" ); document.write( "1+4y=-11 \n" ); document.write( "4y=-12 \n" ); document.write( "y=-3\r \n" ); document.write( "\n" ); document.write( "Check with the second. \n" ); document.write( "-11-(-3)=-8 checks. \n" ); document.write( " \n" ); document.write( " |