document.write( "Question 446133: Solve the system of equations.\r
\n" ); document.write( "\n" ); document.write( "2x+8y+z=17
\n" ); document.write( "-x+y+4z=-7
\n" ); document.write( "x+4y+4z=-2\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "I would appreciate the help. thank you \n" ); document.write( "
Algebra.Com's Answer #307194 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
2x+8y+1 z=17--------------1
\n" ); document.write( "-1x+1y+4z=-7--------------2
\n" ); document.write( "1x+4y+4z=-2--------------3
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\n" ); document.write( "consider equation 1 &2 Eliminate y
\n" ); document.write( "Multiply 1 by 1
\n" ); document.write( "Multiply 2 by -8
\n" ); document.write( "we get
\n" ); document.write( "2x+8y+z =17
\n" ); document.write( "8x-8y-32z=56
\n" ); document.write( "Add the two
\n" ); document.write( "10x-31z=73 -------------4
\n" ); document.write( "consider equation 2 & 3 Eliminate y
\n" ); document.write( "Multiply 2 by-4
\n" ); document.write( "Multiply 3 by 1
\n" ); document.write( "we get
\n" ); document.write( "4x-4y-16z=28
\n" ); document.write( "x+4y+4z=-2
\n" ); document.write( "Add the two
\n" ); document.write( "5x-12z=26 -------------5 5
\n" ); document.write( "Consider (4) & (5) Eliminate x
\n" ); document.write( "Multiply 4 by 1
\n" ); document.write( "Multiply (5) by -2
\n" ); document.write( "we get
\n" ); document.write( "10x-31z=73
\n" ); document.write( "-10x+24z=-52
\n" ); document.write( "Add the two
\n" ); document.write( "-7z=21
\n" ); document.write( "/ -7
\n" ); document.write( "z=-3
\n" ); document.write( "Plug the value of z in 5
\n" ); document.write( "5x+36=26
\n" ); document.write( "5x=-10
\n" ); document.write( "x=-2
\n" ); document.write( "plug value of x & z in 1
\n" ); document.write( "-4+8y-3 =17
\n" ); document.write( "8y=4+3+17
\n" ); document.write( "y=24
\n" ); document.write( "m.ananth@hotmail.ca
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