document.write( "Question 397216: Solve by elimination method\r
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document.write( "6x-9y=13.5
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document.write( "7y-2x=-6.5 \n" );
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Algebra.Com's Answer #281571 by mananth(16946) You can put this solution on YOUR website! 6x-9y=13.5................1 \n" ); document.write( "7y-2x=-6.5................2\r \n" ); document.write( "\n" ); document.write( "... \n" ); document.write( "multiply (2) by 3 \n" ); document.write( "21y-6x=-19.5 \n" ); document.write( "add to (1) \n" ); document.write( "21y-9y=-19.5+13.5 \n" ); document.write( "12y=-6 \n" ); document.write( "/12 \n" ); document.write( "y=-1/2 \n" ); document.write( "... \n" ); document.write( "plug value of y in 1 \n" ); document.write( "6x-9*1/2=13.5 \n" ); document.write( "6x=13.5-4.5 \n" ); document.write( "6x=9 \n" ); document.write( "x=1.5\r \n" ); document.write( "\n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |