document.write( "Question 999145: Solve using addition method\r
\n" ); document.write( "\n" ); document.write( "x+3y+z=6
\n" ); document.write( "3x+y-z=-2
\n" ); document.write( "2x+2y-z=1
\n" ); document.write( "

Algebra.Com's Answer #616851 by Alan3354(69443)\"\" \"About 
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Solve using addition method\r
\n" ); document.write( "\n" ); document.write( "x+3y+z=6
\n" ); document.write( "3x+y-z=-2
\n" ); document.write( "2x+2y-z=1
\n" ); document.write( "-----------
\n" ); document.write( "Add eqn 1 and eqn 2.
\n" ); document.write( "Then add eqn 1 and eqn 3.
\n" ); document.write( "---------
\n" ); document.write( "That eliminates z, leaves 2 equations in x & y.
\n" ); document.write( "Can you do the rest?
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