document.write( "Question 766599: Use the elimination method to solve the system of equation that has four variables.\r
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document.write( "w+x-y+z=0
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document.write( "w-2x-2y-z=-5
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document.write( "w-3x-y+z=4
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document.write( "2w-x-y+3z=7\r
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document.write( "w=?
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document.write( "x=?
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document.write( "y=?
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document.write( "z=? \n" );
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Algebra.Com's Answer #467056 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Use the elimination method to solve the system of equation that has four variables. \n" ); document.write( "w+x-y+z=0 \n" ); document.write( "w-2x-2y-z=-5 \n" ); document.write( "w-3x-y+z=4 \n" ); document.write( "2w-x-y+3z=7 \n" ); document.write( "============== \n" ); document.write( "Eliminated the z terms 1st. \n" ); document.write( "Add eqn 1 & 2 \n" ); document.write( "Subtract eqn 1 & 3 \n" ); document.write( "Multiply eqn 1 by 3, then subtract from eqn 4. \n" ); document.write( "---------- \n" ); document.write( "z is eliminated. You'll have 3 eqns in w, x & y. \n" ); document.write( "Pick w, x or y and eliminate one of them. \n" ); document.write( "etc. \n" ); document.write( " |