document.write( "Question 1109714: Solve the system.
\n" ); document.write( "x – 4y – z = 21
\n" ); document.write( "6x – 3y – z = –4
\n" ); document.write( "–x +2y –5z = 19
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Algebra.Com's Answer #724680 by Alan3354(69443)\"\" \"About 
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Solve the system.
\n" ); document.write( "x – 4y – z = 21
\n" ); document.write( "6x – 3y – z = –4
\n" ); document.write( "–x +2y –5z = 19
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\n" ); document.write( "Step 1, Subtract the 2nd eqn from the 1st.
\n" ); document.write( "Step 2, multiply the 1st eqn by 5, then subtract from the 3rd.
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\n" ); document.write( "z is gone.\r
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