document.write( "Question 107423: How do I solve by elimination: X-4Y=-23
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document.write( " 2X+3Y=9 \n" );
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Algebra.Com's Answer #78187 by Annabelle1(69)![]() ![]() ![]() You can put this solution on YOUR website! we need to get the coefficient of x to be the same. \n" ); document.write( "multiply the first equation through by 2\r \n" ); document.write( "\n" ); document.write( "2x-8y=-46 \n" ); document.write( "2x+3y=9\r \n" ); document.write( "\n" ); document.write( "subtract the two equations to eliminate the x\r \n" ); document.write( "\n" ); document.write( "2x-2x-8y-3y=-46-9 \n" ); document.write( "-11y=-55 \n" ); document.write( "y=-55/-11 \n" ); document.write( "y=5 \n" ); document.write( "sub this number back into one of the original equations to get your x value\r \n" ); document.write( "\n" ); document.write( "2x-8*5=-46 \n" ); document.write( "2x-40=-46 \n" ); document.write( "2x=-46+40 \n" ); document.write( "2x=-6 \n" ); document.write( "x=-3 \n" ); document.write( "your solution is x=-3, y=5 \n" ); document.write( " |