document.write( "Question 764473: solve the following equations by cramer's rule: x+y+z=9, 2x+5y+7z=52, 2x+y-z=0 \n" ); document.write( "

Algebra.Com's Answer #465499 by ssasr(5) $\"\"$ $\"About$

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x+y+z=9
\n" ); document.write( "2x+5y+7z=52
\n" ); document.write( "2x+y-z=0
\n" ); document.write( "delta= 1 1 1
\n" ); document.write( " 2 5 7
\n" ); document.write( " 2 1 -1
\n" ); document.write( " =-4
\n" ); document.write( "delta x=
\n" ); document.write( " 9 1 1
\n" ); document.write( " 52 5 7
\n" ); document.write( " 0 1 -1
\n" ); document.write( " =-4/-4=1
\n" ); document.write( "delta y=
\n" ); document.write( " 1 9 1
\n" ); document.write( " 5 52 7
\n" ); document.write( " 1 0 -1
\n" ); document.write( " =-12/-4=3
\n" ); document.write( "delta z=
\n" ); document.write( " 1 1 9
\n" ); document.write( " 7 5 52
\n" ); document.write( " -1 1 0
\n" ); document.write( " =-20/-4=5
\n" ); document.write( "ANSWER=x=1,y=3,z=5
\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( " _____________M.Srikanth
\n" ); document.write( " XI std \n" ); document.write( "

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