document.write( "Question 1097901: 5x+8y-z=36
\n" ); document.write( "x-2y+7z=18
\n" ); document.write( "3x+y+z=21
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Algebra.Com's Answer #712396 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
I would use eliminataion.
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\n" ); document.write( "Eliminate z first.
\n" ); document.write( "Add the 1st and 3rd equations.
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\n" ); document.write( "then, multiply eqn 1 by 7 and add to eqn 2.
\n" ); document.write( "No more z
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\n" ); document.write( "Actually, I have an Excel sheet I made that does these.
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