document.write( "Question 334096: Solve: 3x + 2y = 18
\n" ); document.write( " 2x - z = 4
\n" ); document.write( " y + 2z = 21
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Algebra.Com's Answer #239367 by nyc_function(2741)\"\" \"About 
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Using the substitution method, I got x = 8 y = -3 and z = 12. \n" ); document.write( "
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