document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1012979>Question 1012979</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The perimeter of a rectangle is 42 cm. If the length is trebled and 7cm is added to 4 times the width, the perimeter of the new rectangle is 154 cm. Find the length of the original rectangle. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #629118 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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/cgi-bin/show-face.mpl?user=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=629118\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "L=original length; W=original width;P=original perimeter<BR>\n" );
document.write( "P2=perimeter of new rectangle<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P=2%28L%2BW%29 ALIGN=MIDDLE  ALT=\"P=2%28L%2BW%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=42cm=2%28L%2BW%29 ALIGN=MIDDLE  ALT=\"42cm=2%28L%2BW%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21=L%2BW ALIGN=MIDDLE  ALT=\"21=L%2BW\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21-W=L ALIGN=MIDDLE  ALT=\"21-W=L\"   DISABLED_style= \"max-width:90%; height:auto;\" > Use this to substitute below.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P2=2%283L%2B4W%2B7%29 ALIGN=MIDDLE  ALT=\"P2=2%283L%2B4W%2B7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=154cm=2%283L%2B4W%2B7%29 ALIGN=MIDDLE  ALT=\"154cm=2%283L%2B4W%2B7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=77=3L%2B4W%2B7 ALIGN=MIDDLE  ALT=\"77=3L%2B4W%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=77=3L%2B4W%2B7 ALIGN=MIDDLE  ALT=\"77=3L%2B4W%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" > Substitute for L from above.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=77=3%2821-W%29%2B4W%2B7 ALIGN=MIDDLE  ALT=\"77=3%2821-W%29%2B4W%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=70=63-3W%2B4W ALIGN=MIDDLE  ALT=\"70=63-3W%2B4W\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7=W ALIGN=MIDDLE  ALT=\"7=W\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( "ANSWER 1: The original width was 7 cm.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L=21-W ALIGN=MIDDLE  ALT=\"L=21-W\"   DISABLED_style= \"max-width:90%; height:auto;\" >=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21-7=14 ALIGN=MIDDLE  ALT=\"21-7=14\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "ANSWER 2: The original length was 14 cm.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "CHECK:<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P=2%28L%2BW%29 ALIGN=MIDDLE  ALT=\"P=2%28L%2BW%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P=2%2814cm%2B7cm%29 ALIGN=MIDDLE  ALT=\"P=2%2814cm%2B7cm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=42cm=2%2821cm%29 ALIGN=MIDDLE  ALT=\"42cm=2%2821cm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=42cm=42cm ALIGN=MIDDLE  ALT=\"42cm=42cm\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P2=2%283L%2B%284W%2B7%29%29 ALIGN=MIDDLE  ALT=\"P2=2%283L%2B%284W%2B7%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=154cm=2%283%2814cm%29%2B4%287cm%29%2B7cm%29 ALIGN=MIDDLE  ALT=\"154cm=2%283%2814cm%29%2B4%287cm%29%2B7cm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=154cm=2%2842cm%2B28cm%2B7cm%29 ALIGN=MIDDLE  ALT=\"154cm=2%2842cm%2B28cm%2B7cm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=154cm=2%2877cm%29 ALIGN=MIDDLE  ALT=\"154cm=2%2877cm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=154cm=154cm ALIGN=MIDDLE  ALT=\"154cm=154cm\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );