document.write( "Question 365104: 3x+y =-6
\n" ); document.write( "4x +z=0
\n" ); document.write( " 2y+z=-2 \n" ); document.write( "
Algebra.Com's Answer #260351 by Alan3354(69443)\"\" \"About 
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3x+y =-6
\n" ); document.write( "4x +z=0
\n" ); document.write( " 2y+z=-2
\n" ); document.write( "-------------
\n" ); document.write( "Substitution will work.
\n" ); document.write( "z = -4x
\n" ); document.write( "2y+z = -2
\n" ); document.write( "-4x+ 2y = -2
\n" ); document.write( "3x + y = -6 x2 --> 6x + 2y = -12
\n" ); document.write( "6x + 2y = -12
\n" ); document.write( "-4x+ 2y = -2
\n" ); document.write( "--------------- Subtract
\n" ); document.write( "10x = -10
\n" ); document.write( "x = -1
\n" ); document.write( "------
\n" ); document.write( "z = 4
\n" ); document.write( "----
\n" ); document.write( "y = -3\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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