document.write( "Question 374212: what is the addition method if possible?
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document.write( "3x+9y=9
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document.write( "-x+5y=-3 \n" );
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Algebra.Com's Answer #266324 by dondon(1)![]() ![]() ![]() You can put this solution on YOUR website! 3x + 9y = 9 (number this equation as equation i) \n" ); document.write( "-x + 5y = -3 (number this equation as equation ii)\r \n" ); document.write( "\n" ); document.write( "Now multiply equation ii) by 3 which gives:\r \n" ); document.write( "\n" ); document.write( "-3x + 15y = -9 (number this equation as equation iii)\r \n" ); document.write( "\n" ); document.write( "Now add equation i) and equation iii) which gives:\r \n" ); document.write( "\n" ); document.write( " 24y = 0 \n" ); document.write( "=> y = 0\r \n" ); document.write( "\n" ); document.write( "Now plug this obtained value of y in any of equation i) or ii) to get value of x: \n" ); document.write( "plugging in i)\r \n" ); document.write( "\n" ); document.write( " 3x + 9(0) = 9 \n" ); document.write( "=> 3x = 9 \n" ); document.write( "=> x = 3\r \n" ); document.write( "\n" ); document.write( "so we get x = 3 & y = 0 as the answer. \n" ); document.write( " |