document.write( "Question 726685: Hello.
\n" ); document.write( "I'm trying to solve this System of Equations with three variables.
\n" ); document.write( "r+s=5
\n" ); document.write( "3s+2t=-1
\n" ); document.write( "4r+t=14
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #444723 by tanjo3(60) $\"\"$ $\"About$

You can put this solution on YOUR website!
Equation 1: $\"r+%2B+s+=+5\"$
\n" ); document.write( "Equation 2: $\"3s+%2B+2t+=+-1\"$
\n" ); document.write( "Equation 3: $\"4r+%2B+t+=+14\"$ \r
\n" ); document.write( "\n" ); document.write( "Solve for s in (1):
\n" ); document.write( " $\"s+=+5+-+r\"$ \r
\n" ); document.write( "\n" ); document.write( "Solve for t in (2):
\n" ); document.write( " $\"3%285+-+r%29+%2B+2t+=+-1\"$
\n" ); document.write( " $\"15+-+3r+%2B+2t+=+-1\"$
\n" ); document.write( " $\"2t+=+3r+-+16\"$
\n" ); document.write( " $\"t+=+%283r+-+16%29%2F2\"$ \r
\n" ); document.write( "\n" ); document.write( "Solve for r in (3):
\n" ); document.write( " $\"4r+%2B+%283r+-+16%29%2F2+=+14\"$
\n" ); document.write( " $\"4r+%2B+%283%2F2%29r+-+8+=+14\"$
\n" ); document.write( " $\"%2811%2F2%29r+=+22\"$
\n" ); document.write( " $\"%2811%2F2%29r+=+22\"$
\n" ); document.write( " $\"r+=+4\"$ \r
\n" ); document.write( "\n" ); document.write( "Sub r=4 in (1)
\n" ); document.write( " $\"4+%2B+s+=+5\"$
\n" ); document.write( " $\"s+=+1\"$ \r
\n" ); document.write( "\n" ); document.write( "Sub s=1 in (2)
\n" ); document.write( " $\"3%281%29+%2B+2t+=+-1\"$
\n" ); document.write( " $\"2t+=+-4\"$
\n" ); document.write( " $\"t+=+-2\"$ \r
\n" ); document.write( "\n" ); document.write( "So, r=4, s=1, t=-2 \n" ); document.write( "

\n" );