document.write( "Question 1196110: How do you solve the system of three linear equations using the elimination method which theses equations
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Algebra.Com's Answer #828811 by Edwin McCravy(20054) $\"\"$ $\"About$

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document.write( "Since z is already eliminated from the 2nd equation,\r\n" );
document.write( "let's eliminate z from the 1st and 3rd equations:\r\n" );
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document.write( "Multiply the first equation by 3 and the 3rd equation by 5,\r\n" );
document.write( "so the coefficients of z will be alike with opposite signs:\r\n" );
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document.write( "Add the equations term by term and the 15z and the -15z will cancel:\r\n" );
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document.write( "Put that with the original 2nd equation:\r\n" );
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document.write( "Add those term by term, the 4x and the -4x will cancel:\r\n" );
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document.write( "Substitute 3 for y in \r\n" );
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document.write( "Substitute -1/2 for x and 3 for y in 2x-4y+5z=-33\r\n" );
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document.write( "(x,y,z) = (-1/2,3,-4}}}\r\n" );
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document.write( "Edwin

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