document.write( "Question 392526: Solve by the elimination method:\r
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document.write( "5r-8s=-26
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document.write( "8r+5s=83 \n" );
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Algebra.Com's Answer #278584 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Solve by the elimination method: \n" ); document.write( "5r-8s=-26 \n" ); document.write( "8r+5s=83 \n" ); document.write( "---- \n" ); document.write( "Multiply thru 1st equation by 8. \n" ); document.write( "Multiply thru 2nd equation by 5. \n" ); document.write( "------------------------------------ \n" ); document.write( "40r-64s = -8*26 \n" ); document.write( "40r+25s = 5*83 \n" ); document.write( "---- \n" ); document.write( "Subtract the top equation from the bottome and solve for \"s\": \n" ); document.write( "89s = 623 \n" ); document.write( "s = 7 \n" ); document.write( "--- \n" ); document.write( "Solve for \"r\": \n" ); document.write( "5r-8*7 = -26 \n" ); document.write( "5r = -26 + 56 \n" ); document.write( "5r = 30 \n" ); document.write( "r = 6 \n" ); document.write( "================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |