document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=452517>Question 452517</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I don't understand this math problem. I am supposed to solve the equation... <BR>\n" );
document.write( "3/r+4 - 1/r =1/r (3 over r+4 - 1 over r equals 1 over r). I'm confused on the way to solve it because you can't multiply r by anything to get r+4 (common denominator). Thanks for your help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #311055 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=311055\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 3/(r+4) - 1/r =1/r <BR>\n" );
document.write( "----<BR>\n" );
document.write( "3/(r+4) = 2/r<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Cross-multiply to get:<BR>\n" );
document.write( "3r = 2r+8<BR>\n" );
document.write( "r = 8<BR>\n" );
document.write( "=============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );