document.write( "Question 320376: solve by elimination method\r
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document.write( "6x-9y=25.5
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document.write( "7y-3x=-14 \n" );
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Algebra.Com's Answer #229458 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 6x-9y=25.5 \n" ); document.write( "7y-3x=-14 \n" ); document.write( "-3X+7Y=-14 MULTIPLY BY 2 & ADD TO THE FIRST EQUATION. \n" ); document.write( "-6X+14Y=-28 \n" ); document.write( "6X-9Y=25.5 \n" ); document.write( "---------------- \n" ); document.write( "5Y=-2.5 \n" ); document.write( "Y=-2.5/5 \n" ); document.write( "Y=-.5 ANS. \n" ); document.write( "6X-9*-.5=25.5 \n" ); document.write( "6X+4.5=25.5 \n" ); document.write( "6X=25.5-4.5 \n" ); document.write( "6X=21 \n" ); document.write( "X=21/6 \n" ); document.write( "X=3.5 ANS. \n" ); document.write( "PROOF: \n" ); document.write( "3*-3.5+7*-.5=-14 \n" ); document.write( "-10.5-3.5=-14 \n" ); document.write( "-14=-14 \n" ); document.write( " \n" ); document.write( " |