document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=550867>Question 550867</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The tens digit of a certain two digit number is 1 more than 3 times the units digit. The original number is 9 less than 3 times the number formed by interchanging the digits. Find the original number. Please help me answer this! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #359181 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=359181\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The tens digit of a certain two digit number is 1 more than 3 times the units digit. The original number is 9 less than 3 times the number formed by interchanging the digits. Find the original number.<BR>\n" );
document.write( "**<BR>\n" );
document.write( "let u=unit's digit<BR>\n" );
document.write( "let t=ten's digit=3u+1<BR>\n" );
document.write( "..<BR>\n" );
document.write( "original number: 10t+u=10(3u+1)=30u+10<BR>\n" );
document.write( "interchanged number: 10u+t=10u+3u+1=13u+1<BR>\n" );
document.write( "..<BR>\n" );
document.write( "30u+10=3(13u+1)-9=39u+3-9=39u-6<BR>\n" );
document.write( "9u=16<BR>\n" );
document.write( "u=2<BR>\n" );
document.write( "t=3u+1=7<BR>\n" );
document.write( "original number=72 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );