document.write( "Question 445381: What are the solutions to\r
\n" ); document.write( "\n" ); document.write( "6x+3y+z=19
\n" ); document.write( "x-3y+2z=21
\n" ); document.write( "17x-2y+3z=86 \n" ); document.write( "
Algebra.Com's Answer #306806 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
6x+3y+z =19--------------1
\n" ); document.write( "x-3y+2z=21--------------2
\n" ); document.write( "17x-2y+ 2z=86-----------3
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\n" ); document.write( "consider equation 1 &2 Eliminate y
\n" ); document.write( "Add the two
\n" ); document.write( "7x+3z=40-------------4
\n" ); document.write( "consider equation 2 & 3 Eliminate y
\n" ); document.write( "7x+3z=40--------------5
\n" ); document.write( "Multiply 2 by -2
\n" ); document.write( "Multiply 3 by 3
\n" ); document.write( "we get
\n" ); document.write( "-2x+6y-4z=-42
\n" ); document.write( "51x-6y+ 6z=258
\n" ); document.write( "Add the two
\n" ); document.write( "49x+2z=216 -------------5 5
\n" ); document.write( "Consider (4) & (5) Eliminate z
\n" ); document.write( "Multiply 4 by -7
\n" ); document.write( "Multiply (5) by 1
\n" ); document.write( "we get
\n" ); document.write( "-49x-21z=-280
\n" ); document.write( "49x+2z=216
\n" ); document.write( "Add the two
\n" ); document.write( "-19z=-64
\n" ); document.write( "/-19
\n" ); document.write( "z=3.37
\n" ); document.write( "Plug the value of z in 5
\n" ); document.write( "49x+6.74=216
\n" ); document.write( "49x=209.26
\n" ); document.write( "x=4.27
\n" ); document.write( "plug value of x & z in 1
\n" ); document.write( "25.62+3y+3.37=19
\n" ); document.write( "3y=-25.62-3.37+ 19
\n" ); document.write( "y=-9.99
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\n" ); document.write( "m.ananth@hotmail.ca
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