document.write( "Question 474394: Solve the system of equations\r
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document.write( "x + y = 5\r
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document.write( "x - y = -9 \n" );
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Algebra.Com's Answer #325362 by mananth(16946)![]() ![]() You can put this solution on YOUR website! 1 x + 1 y = 5 .............1 \n" ); document.write( "1 x -1 y = -9 .............2 \n" ); document.write( " \n" ); document.write( "multiply (1)by 1 \n" ); document.write( "Multiply (2) by 1 \n" ); document.write( "1 x + 1 y = 5 \n" ); document.write( "1 x + -1 y = -9 \n" ); document.write( "Add the two equations \n" ); document.write( "2 x = -4 \n" ); document.write( "/ 2 \n" ); document.write( "x = -2 \n" ); document.write( "plug value of x in (1) \n" ); document.write( "1 x + 1 y = 5 \n" ); document.write( "-2 + 1 y = 5 \n" ); document.write( " 1 y = 5 + 2 \n" ); document.write( " 1 y = 7 \n" ); document.write( " y = 7. \n" ); document.write( " \n" ); document.write( " |