document.write( "Question 54320This question is from textbook mathematics in action
\n" ); document.write( ": Solve the system of equations algebrically.
\n" ); document.write( "Eliminate the z variable.\r
\n" ); document.write( "\n" ); document.write( "2x-y+4z=-2
\n" ); document.write( "3x-2y-z=-3
\n" ); document.write( "x+4y+2z=17 \n" ); document.write( "
Algebra.Com's Answer #36592 by venugopalramana(3286)\"\" \"About 
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Solve the system of equations algebrically.
\n" ); document.write( "Eliminate the z variable.
\n" ); document.write( "2x-y+4z=-2...............................I
\n" ); document.write( "3x-2y-z=-3......................................II
\n" ); document.write( "x+4y+2z=17...............................III
\n" ); document.write( "EQN.III+2*EQN.II
\n" ); document.write( "X+4Y+2Z+6X-4Y-2Z=17-6=11
\n" ); document.write( "7X=11.............X=11/7
\n" ); document.write( "EQN.I-2*EQN.III
\n" ); document.write( "2X-Y+4Z-2X-8Y-4Z=-2-34=-36
\n" ); document.write( "-9Y=-36
\n" ); document.write( "Y=4
\n" ); document.write( "SUBSTITUTING IN EQN.I
\n" ); document.write( "2*11/7 -4 +4Z = -2
\n" ); document.write( "4Z = -8/7
\n" ); document.write( "Z=-2/7 \n" ); document.write( "
\n" );