document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=209572>Question 209572</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/1565770390/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Use substitution to solve<BR>\n" );
document.write( "NP+ND=50<BR>\n" );
document.write( "NP+10ND=140 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #158523 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=158523\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> NP+ND=50 or NP=50-ND<BR>\n" );
document.write( "NP+10ND=140<BR>\n" );
document.write( "(50-ND)+10ND=140<BR>\n" );
document.write( "9ND=140-50<BR>\n" );
document.write( "9ND=90<BR>\n" );
document.write( "ND=90/9<BR>\n" );
document.write( "ND=10 ANS.<BR>\n" );
document.write( "NP=50-10<BR>\n" );
document.write( "NP=40 ANS.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "40+10*10=140<BR>\n" );
document.write( "40+100=140<BR>\n" );
document.write( "140=140 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );