document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=255769>Question 255769</A>: <I><SPAN STYLE=\"word-break: break-all;\"> write an equation for the sentence:  Lisa is five years older than her sister and the sum of their ages is 19 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #188025 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=188025\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> write an equation for the sentence: Lisa is five years older than her sister and the sum of their ages is 19<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "L = S + 5<BR>\n" );
document.write( "L + S = 19<BR>\n" );
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document.write( "Substitute for L and solve for S:<BR>\n" );
document.write( "S+5 + S = 19<BR>\n" );
document.write( "2S = 14<BR>\n" );
document.write( "S = 7 (Her sister's age)<BR>\n" );
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document.write( "Since L = S+5, L = 7+5 = 12 (Lisa's age)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );