document.write( "Question 1109714: Solve the system.
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document.write( "x – 4y – z = 21
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document.write( "6x – 3y – z = –4
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document.write( "–x +2y –5z = 19
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Algebra.Com's Answer #724680 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Solve the system. \n" ); document.write( "x – 4y – z = 21 \n" ); document.write( "6x – 3y – z = –4 \n" ); document.write( "–x +2y –5z = 19 \n" ); document.write( "-------------------- \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. \n" ); document.write( "---- \n" ); document.write( "z is gone.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |