document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=230510>Question 230510</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sum of two numbers is 18. The difference between four times the smaller number and seven is<BR>\n" );
document.write( "equal to the sum of two times the larger number and five. Find the two numbers. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #170754 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=170754\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+y=18 or x=18-y<BR>\n" );
document.write( "4x-7=2y+5<BR>\n" );
document.write( "4(18-y)-7=2y+5<BR>\n" );
document.write( "72-4y-7=2y+5<BR>\n" );
document.write( "-4y-2y=5-72+7<BR>\n" );
document.write( "-6y=-60<BR>\n" );
document.write( "y=-60/-6<BR>\n" );
document.write( "y=10 ans.<BR>\n" );
document.write( "x=18-10<BR>\n" );
document.write( "x=8 ans.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "4*8-7=2*10+5<BR>\n" );
document.write( "32-7=20+5<BR>\n" );
document.write( "25=25 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );