document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1110567>Question 1110567</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sum of Joan's age and her fathers age is 67. Three times Joan's age increased by 7 is her fathers age. How old is Joan? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #725553 by </B><A HREF=/tutors/aboutme.mpl?userid=addingup><B>addingup(3677)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=addingup><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=addingup><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=725553\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> J + f = 67 subtract J from both sides:<BR>\n" );
document.write( "f = 67 - J<BR>\n" );
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document.write( "3J + 7 = f substitute for f:<BR>\n" );
document.write( "3J + 7 = 67 - J<BR>\n" );
document.write( "4J = 60<BR>\n" );
document.write( "J = 15<BR>\n" );
document.write( "and f?<BR>\n" );
document.write( "f = 67 - J = 67 - 15 = 52<BR>\n" );
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document.write( "Check:<BR>\n" );
document.write( "f = 3J + 7<BR>\n" );
document.write( "f = 3(15) + 7 <BR>\n" );
document.write( "f = 45 + 7 = 52 Correct<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );