document.write( "Question 44575: Solve the system by addition\r
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document.write( "2x-4y=7\r
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document.write( "4x+2y=9 \n" );
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Algebra.Com's Answer #29530 by venugopalramana(3286)![]() ![]() You can put this solution on YOUR website! 2x-4y=7......................I \n" ); document.write( "4x+2y=9.................II \n" ); document.write( "EQN.I+EQN.II*2 \n" ); document.write( "2X-4Y+8X+4Y=7+18=25 \n" ); document.write( "10X=25 \n" ); document.write( "X=25/10=2.5 \n" ); document.write( "4*2.5+2Y=9 \n" ); document.write( "2Y=9-10=-1 \n" ); document.write( "Y=-1/2=-0.5 \n" ); document.write( " |