document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=162175>Question 162175</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve by subtitution:<BR>\n" );
document.write( "1/5x + 1/2y = 8<BR>\n" );
document.write( "x +y = 20\r<BR>\n" );
document.write( "\n" );
document.write( "solve by subtitution:<BR>\n" );
document.write( "6x + 5y = -3<BR>\n" );
document.write( "-x - 5/6y = -7<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #119526 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=119526\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1/5x+1/2y=8<BR>\n" );
document.write( "x+y=20 or x=20-y<BR>\n" );
document.write( "(20-y)/5+y/2=8 <BR>\n" );
document.write( "[2(20-y)+5y)]/10=8<BR>\n" );
document.write( "(40-2y+5y)/10=8<BR>\n" );
document.write( "40+3y=10*8<BR>\n" );
document.write( "40+3y=80<BR>\n" );
document.write( "3y=80-40<BR>\n" );
document.write( "3y=40<BR>\n" );
document.write( "y=40/3 answer.<BR>\n" );
document.write( "x+40/3=20<BR>\n" );
document.write( "x=20-40/3<BR>\n" );
document.write( "x=(3*20-40)/3<BR>\n" );
document.write( "x=(60-40)/3<BR>\n" );
document.write( "x=20/3 answer.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "(20/3)/5+(40/3)/2=8<BR>\n" );
document.write( "20/3*1/5+40/3*1/2=8<BR>\n" );
document.write( "20/15+40/6=8<BR>\n" );
document.write( "1.333+6.667=8<BR>\n" );
document.write( "8=8\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );