document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=180219>Question 180219</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0131250892/algebrahomeworkh>Algebra 2</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> I am so lost on this lesson.  Help please! :)\r<BR>\n" );
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document.write( "5r - 4s - 3t = 3<BR>\n" );
document.write( "r = 3s + 1 <BR>\n" );
document.write( "t = s + r </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #135057 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=135057\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 5r - 4s - 3t = 3<BR>\n" );
document.write( "r = 3s + 1 <BR>\n" );
document.write( "t = s + r<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "You want to have one equation with one variable.<BR>\n" );
document.write( "Find a variable that is associated with two others, like \"s\"<BR>\n" );
document.write( "r = 3s+1<BR>\n" );
document.write( "t =s + r = s+ 3s+1 = 4s+1<BR>\n" );
document.write( "-------------------------------<BR>\n" );
document.write( "Now substitute for \"r\" and for \"t\" in the 1st equation to get:\r<BR>\n" );
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document.write( "5(3s+1) - 4s - 3(4s+1) = 3\r<BR>\n" );
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document.write( "Solve for \"s\".\r<BR>\n" );
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document.write( "15s + 5 - 4s - 12s - 3 = 3\r<BR>\n" );
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document.write( "-s +2 = 3<BR>\n" );
document.write( "-s = 1<BR>\n" );
document.write( "s = -1<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "Substitute to solve for r and for t:<BR>\n" );
document.write( "r = 3s+1 = 3(-1) + 1 = -2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "t = 4s+1 = 4(-1) + 1 = -3<BR>\n" );
document.write( "============================<BR>\n" );
document.write( "Final Answer: <BR>\n" );
document.write( "s = -1<BR>\n" );
document.write( "r = -2<BR>\n" );
document.write( "t = -3<BR>\n" );
document.write( "==============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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