document.write( "Question 726149: Solve this system of equations using either addition or substitution.\r
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document.write( "2m=n-3
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document.write( "3m=2n-9\r
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document.write( "Please provide a check.\r
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document.write( "THANKS IN ADVANCE. I TOTALLY APPERICIATE YOU TAKING THE TIME TO HELP ME. \n" );
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Algebra.Com's Answer #444492 by checkley79(3341)![]() ![]() ![]() You can put this solution on YOUR website! 2m=n-3 MULTIPLY BY -2 & ADD. \n" ); document.write( "3m=2n-9 \n" ); document.write( "-4m=-2n+6 \n" ); document.write( "---------------- \n" ); document.write( "-m=-3 \n" ); document.write( "m=3 ans. \n" ); document.write( "2*3=n-3 \n" ); document.write( "6=n-3 \n" ); document.write( "n=6+3 \n" ); document.write( "n=9 ans. \n" ); document.write( "Proof: \n" ); document.write( "3*3=2*9-9 \n" ); document.write( "9=18-9 \n" ); document.write( "9=9 \n" ); document.write( " |