document.write( "Question 936319: Solve the 3x3 system of equations.\r
\n" ); document.write( "\n" ); document.write( "x + y + z = 6\r
\n" ); document.write( "\n" ); document.write( "x = 2y\r
\n" ); document.write( "\n" ); document.write( "z = x + 1 \n" ); document.write( "

Algebra.Com's Answer #569744 by MathLover1(20850) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( " $\"x+%2B+y+%2B+z+=+6\"$ ....eq.1\r
\n" ); document.write( "\n" ); document.write( " $\"x+=+2y\"$ ...........eq.2\r
\n" ); document.write( "\n" ); document.write( " $\"z+=+x+%2B+1\"$ .......eq.3
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\n" ); document.write( "\n" ); document.write( " $\"x+%2B+y+%2B+z+=+6\"$ ....eq.1...substitute $\"x\"$ and $\"z\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2y%2B+y+%2B+x+%2B+1=+6\"$ .....substitute $\"x\"$ again\r
\n" ); document.write( "\n" ); document.write( " $\"2y%2B+y+%2B+2y+%2B+1=+6\"$ ...solve for $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"5y+=+6-1\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"5y+=+5\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y+=+5%2F5\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28y+=1%29\"$ \r
\n" ); document.write( "\n" ); document.write( "go to $\"x+=+2y\"$ ...........eq.2..substitute $\"y\"$ and solve for $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x+=+2%2A1\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28x+=+2%29\"$ \r
\n" ); document.write( "\n" ); document.write( "go to $\"z+=+x+%2B+1\"$ .......eq.3..substitute $\"x\"$ and solve for $\"z\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"z+=+2+%2B+1\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28z+=+3%29\"$ \r
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