3x+y+z=1
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document.write( "6x+3y-2z=23
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document.write( "-x-5y-4z=-9
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document.write( "Eliminate x from the 2nd equation by \r\n" );
document.write( "multiplying the 1st equation by -2 and\r\n" );
document.write( "then adding it to the 2nd equation: \r\n" );
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document.write( "Eliminate x from the 3rd equation by \r\n" );
document.write( "multiplying the 3rd equation by 3 and\r\n" );
document.write( "then adding the 1st equation to it:\r\n" );
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document.write( "Eliminate y from the 3rd equation by \r\n" );
document.write( "multiplying the 2nd equation by 14 and\r\n" );
document.write( "then adding it to the 3rd equation:\r\n" );
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document.write( "Solve the 3rd equation for z\r\n" );
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document.write( "Substitute z=-4 into the 2nd equation\r\n" );
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document.write( "Substitute y=5 and z=-4 in the 1st equation\r\n" );
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document.write( "Solution: (x,y,z) = (0,5,-4)\r\n" );
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document.write( "Edwin
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document.write( "![\"\"](\"/images/stars/stars-13.gif\")
