document.write( "Question 666632: Solve the system by elimination.\r
\n" ); document.write( "\n" ); document.write( "x+5y-4z=-10
\n" ); document.write( "2x-y+5z=-9
\n" ); document.write( "2x-10y-5z=0\r
\n" ); document.write( "\n" ); document.write( "answers:\r
\n" ); document.write( "\n" ); document.write( "A). (5,-1,0)
\n" ); document.write( "B). (-5,1,0)
\n" ); document.write( "C). (-5,-1,0)
\n" ); document.write( "D). (-5,-1,-2) \n" ); document.write( "

Algebra.Com's Answer #414598 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "x+5y-4z=-10
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document.write( "2x-y+5z=-9    ||eliminating z
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document.write( " 13x + 21 y = -86
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document.write( "2x-y+5z=-9
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document.write( "2x-10y-5z=0   ||eliminating z
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document.write( " 4x - 11y = -9 
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document.write( " 13x + 21 y = -86
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document.write( "   21x = -105,  x = -5   and y = -1  and z = 0 \n" );
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