document.write( "Question 680747: Solve Linear Systems Algebraically.\r
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document.write( "x+ 4y = 1
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document.write( "3x + 2y = -12\r
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document.write( "and\r
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document.write( "3x + 2y = 6
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document.write( "x-4y = -6\r
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document.write( "Pleas help, Clari \n" );
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Algebra.Com's Answer #422453 by mananth(16946)![]() ![]() You can put this solution on YOUR website! 1 x + 4 y = 1 .............1 \n" ); document.write( " \n" ); document.write( "3 x + 2 y = -12 .............2 \n" ); document.write( "Eliminate y \n" ); document.write( "multiply (1)by 1 \n" ); document.write( "Multiply (2) by -2 \n" ); document.write( "1 x 4 y = 1 \n" ); document.write( "-6 x -4 y = 24 \n" ); document.write( "Add the two equations \n" ); document.write( "-5 x = 25 \n" ); document.write( "/ -5 \n" ); document.write( "x = -5 \n" ); document.write( "plug value of x in (1) \n" ); document.write( "1 x + 4 y = 1 \n" ); document.write( "-5 + 4 y = 1 \n" ); document.write( " 4 y = 1 + 5 \n" ); document.write( " 4 y = 6 \n" ); document.write( " y = 2 \n" ); document.write( "x= -5 \n" ); document.write( "y= 2 \n" ); document.write( "---------------\r \n" ); document.write( "\n" ); document.write( "3 x + 2 y = 6 .............1 \n" ); document.write( " \n" ); document.write( "1 x -4 y = -6 .............2 \n" ); document.write( "Eliminate y \n" ); document.write( "multiply (1)by 2 \n" ); document.write( "Multiply (2) by 1 \n" ); document.write( "6 x 4 y = 12 \n" ); document.write( "1 x -4 y = -6 \n" ); document.write( "Add the two equations \n" ); document.write( "7 x = 6 \n" ); document.write( "/ 7 \n" ); document.write( "x = 1 \n" ); document.write( "plug value of x in (1) \n" ); document.write( "3 x + 2 y = 6 \n" ); document.write( "3 + 2 y = 6 \n" ); document.write( " 2 y = 6 -3 \n" ); document.write( " 2 y = 3 \n" ); document.write( " y = 2 \n" ); document.write( "x= 1 \n" ); document.write( "y= 2 \n" ); document.write( " \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " \n" ); document.write( " |