document.write( "Question 339823: need help!please solve each system
\n" ); document.write( "3x+y+z=0
\n" ); document.write( "2x-y+z=0
\n" ); document.write( "2x+y+z=0 \n" ); document.write( "

Algebra.Com's Answer #243477 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
1. $\"3x%2By%2Bz=0\"$
\n" ); document.write( "2. $\"2x-y%2Bz=0\"$
\n" ); document.write( "3. $\"2x%2By%2Bz=0\"$
\n" ); document.write( "Add eq. 1 and eq. 2,
\n" ); document.write( " $\"3x%2By%2Bz%2B2x-y%2Bz=0%2B0\"$
\n" ); document.write( "4. $\"5x%2B2z=0\"$
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\n" ); document.write( "Add eq. 2 and eq. 3,
\n" ); document.write( " $\"2x-y%2Bz=0\"$
\n" ); document.write( " $\"2x%2By%2Bz=0\"$
\n" ); document.write( "5. $\"4x%2B2z=0\"$
\n" ); document.write( "Subtract eq. 4 from eq. 3,
\n" ); document.write( " $\"5x%2B2z-4x-2z=0-0\"$
\n" ); document.write( " $\"x=0\"$
\n" ); document.write( "Then work backwards,
\n" ); document.write( " $\"5%280%29%2B2z=0\"$
\n" ); document.write( " $\"2z=0\"$
\n" ); document.write( " $\"z=0\"$
\n" ); document.write( "And finally,
\n" ); document.write( " $\"2%280%29%2By%2B0=0\"$
\n" ); document.write( " $\"y=0\"$
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\n" ); document.write( " $\"highlight%28x=y=z=0%29\"$ \n" ); document.write( "

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