document.write( "Question 265445: Please help me solve this system of equations:\r
\n" ); document.write( "\n" ); document.write( "7x+5y+z=0
\n" ); document.write( "-x+3y+2z=16
\n" ); document.write( "x-6y-z=-18\r
\n" ); document.write( "\n" ); document.write( "Thank you! \n" ); document.write( "
Algebra.Com's Answer #195161 by palanisamy(496)\"\" \"About 
You can put this solution on YOUR website!
The given equations are,
\n" ); document.write( "7x+5y+z=0 ...(1)
\n" ); document.write( "-x+3y+2z=16 ...(2)
\n" ); document.write( "x-6y-z=-18 ...(3)
\n" ); document.write( "(1)*2=> 14x+10y+2z = 0 ...(4)
\n" ); document.write( "(2)-(4)=> -15x-7y = 16 ...(5)
\n" ); document.write( "(1)+(3)=> 8x-y = -18 ...(6)
\n" ); document.write( "(6)*7=> 56x-7y = -126 ...(7)
\n" ); document.write( "(5)-(7)=> -71x = 142
\n" ); document.write( " x = 142/(-71)
\n" ); document.write( " x = -2
\n" ); document.write( "(6)=> 8*(-2)-y = -18
\n" ); document.write( " -16-y = -18
\n" ); document.write( " -y = -18+16
\n" ); document.write( " -y = -2
\n" ); document.write( " y = 2
\n" ); document.write( "(1)=> 7*(-2)+5*(2)+z = 0
\n" ); document.write( " -14+10+z= 0
\n" ); document.write( " -4+z = 0
\n" ); document.write( " z = 4
\n" ); document.write( "Therefore the solution is, x= -2, y=2 and z= 4
\n" ); document.write( " \n" ); document.write( "
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