document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=471513>Question 471513</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve each system of equations by using substitution<BR>\n" );
document.write( "1. 3x + 7y = 19<BR>\n" );
document.write( "    x+y=5\r<BR>\n" );
document.write( "\n" );
document.write( "2. x+3y = 12<BR>\n" );
document.write( "   5x+y = 4  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #323385 by </B><A HREF=/tutors/aboutme.mpl?userid=jorel1380><B>jorel1380(3719)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jorel1380><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=jorel1380><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=323385\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 3x + 7y = 19<BR>\n" );
document.write( "    x+y=5<BR>\n" );
document.write( "x=5-y<BR>\n" );
document.write( "3(5-y)+7y=19<BR>\n" );
document.write( "15-3y+7y=19<BR>\n" );
document.write( "4y=4<BR>\n" );
document.write( "y=1<BR>\n" );
document.write( "x=4<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "x+3y = 12<BR>\n" );
document.write( "5x+y = 4 <BR>\n" );
document.write( "x=12-3y<BR>\n" );
document.write( "5(12-3y)+y=4<BR>\n" );
document.write( "60-15y+y=4<BR>\n" );
document.write( "14y=56<BR>\n" );
document.write( "y=4<BR>\n" );
document.write( "x=0.. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );