document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=772516>Question 772516</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve with Substitution<BR>\n" );
document.write( "5x+4y=12<BR>\n" );
document.write( "3x+4y=4<BR>\n" );
document.write( "Answer should look like (x,y) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #470995 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=470995\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 5x + 4y = 12<BR>\n" );
document.write( "3x + 4y = 4<BR>\n" );
document.write( ":\<BR>\n" );
document.write( "using the 2nd equation solve for y<BR>\n" );
document.write( "3x + 4y = 4<BR>\n" );
document.write( "4y = -3x + 4<BR>\n" );
document.write( "Divide both sides by 4<BR>\n" );
document.write( "y = -.75x + 1<BR>\n" );
document.write( "In the first equation, replace y with (-.75x+1) <BR>\n" );
document.write( "5x + 4(-.75x+1) = 12<BR>\n" );
document.write( "5x  - 3x + 4 = 12<BR>\n" );
document.write( "2x = 12 - 4<BR>\n" );
document.write( "2x = 8<BR>\n" );
document.write( "x = 4<BR>\n" );
document.write( ":<BR>\n" );
document.write( "You can find find y, check solutions in both equations </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );