document.write( "Question 161718: Solve the system of equations using the addition (elimination) method.
\n" ); document.write( "If the answer is a unique solution, present it as an ordered pair: (x,y).
\n" ); document.write( "If not, specify whether the answer is \"no solution\" or infinitely many solutions.\"
\n" ); document.write( "5x-4y=1
\n" ); document.write( "-10x+8y=-3
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Algebra.Com's Answer #119185 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
\"system%285x-4y=1%2C-10x%2B8y=-3%29\"
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document.write( "To eliminate the terms in y, multiply the first equation\r\n" );
document.write( "through by 2:\r\n" );
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document.write( "\"system%282%285x-4y%29=2%281%29%2C-10x%2B8y=-3%29\"\r\n" );
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document.write( "\"system%2810x-8y=2%2C-10x%2B8y=-3%29\"\r\n" );
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document.write( "Now add corresponding terme vertically:\r\n" );
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document.write( "\"system%28cross%2810x%29-cross%288y%29=2%2Ccross%28-10x%29%2Bcross%288y%29=-3%29\"\r\n" );
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document.write( "\"0=-1\"\r\n" );
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document.write( "Since all the variables cancelled out leaving only\r\n" );
document.write( "numbers, and the resulting numerical equation is \r\n" );
document.write( "FALSE, the system is said to be INCONSISTENT, and\r\n" );
document.write( "has NO SOLUTION. \r\n" );
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document.write( "[Note: If all the variables had cancelled out leaving \r\n" );
document.write( "only numbers, and the resulting numerical equation had \r\n" );
document.write( "been TRUE instead of FALSE, then the system would have \r\n" );
document.write( "been DEPENDENT, and the system would have INFINITELY\r\n" );
document.write( "MANY SOLUTIONS.]\r\n" );
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document.write( "Edwin
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