document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=999755>Question 999755</A>: <I><SPAN STYLE=\"word-break: break-all;\"> susan is 5 years older than her sister. the sum of their ages is 51. write an equation that could be used to find their ages </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #617345 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=617345\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "X = sister's age; Y = Susan's age = X+5yrs<BR>\n" );
document.write( ".<BR>\n" );
document.write( "X+Y=51 yrs<BR>\n" );
document.write( "X+(X+5yrs)=51 yrs<BR>\n" );
document.write( "2X=46yrs<BR>\n" );
document.write( "X=23 yrs<BR>\n" );
document.write( "Sister is 23 years old.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Y=X+5yrs=23yrs+5yrs=28yrs<BR>\n" );
document.write( "Susan is 28 years old.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "You cannot write a single equation to solve for two variables.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );