document.write( "Question 449484: Solve by the elimination method. \r
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document.write( "0.3x-0.2y=4\r
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document.write( "0.2x+0.5y=-75/17 \n" );
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Algebra.Com's Answer #309206 by mananth(16949) You can put this solution on YOUR website! -3x-0.2y=4 .............1 \n" ); document.write( "0.2x+0.5 y=-4.41 .............2 \n" ); document.write( "Eliminate y \n" ); document.write( "multiply (1)by 0.5 \n" ); document.write( "Multiply (2) by 0.2 \n" ); document.write( "-1.5x-0.1y=2 \n" ); document.write( "0.04x +0.1y=-0.88 \n" ); document.write( "Add the two equations \n" ); document.write( "-1.46x = 1.12 \n" ); document.write( "/-1.46 \n" ); document.write( "x=-0.77 \n" ); document.write( "plug value of x in (1) \n" ); document.write( "-3x-0.2y =4 \n" ); document.write( "2.3-0.2y =4 \n" ); document.write( "-0.2y=4 -2.3 \n" ); document.write( "-0.2y=1.7 \n" ); document.write( "y=-8.52 \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |