document.write( "Question 966802: what is the solution to this 3 by 3 system of equations \r
\n" ); document.write( "\n" ); document.write( "2x-y-z=0
\n" ); document.write( "x-2z=1
\n" ); document.write( "x+y-5z=3 \n" ); document.write( "

Algebra.Com's Answer #590971 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
From eq. 2,
\n" ); document.write( " $\"x=1%2B2z\"$
\n" ); document.write( "Substitute into eq. 1,
\n" ); document.write( " $\"2%281%2B2z%29-y-z=0\"$
\n" ); document.write( " $\"2%2B4z-y-z=0\"$
\n" ); document.write( "4. $\"-y%2B3z=-2\"$
\n" ); document.write( "Substitute into eq. 3,
\n" ); document.write( " $\"1%2B2z%2By-5z=3\"$
\n" ); document.write( "5. $\"y-3z=2\"$
\n" ); document.write( "Equation 4 and 5 are the same equation.
\n" ); document.write( "There are infinitely many solutions.\r
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