document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=408916>Question 408916</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve by substitution method <BR>\n" );
document.write( "y=40+0.25x<BR>\n" );
document.write( "y=35+0.30x<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 #287989 by </B><A HREF=/tutors/aboutme.mpl?userid=ilovezvezda><B>ilovezvezda(1)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ilovezvezda><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=287989\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve by substitution method <BR>\n" );
document.write( "y=40+0.25x<BR>\n" );
document.write( "y=35+0.30x\r<BR>\n" );
document.write( "\n" );
document.write( "from the first equation, y-40/.25=x<BR>\n" );
document.write( "now substitute x in the 2nd equation with this value to find y<BR>\n" );
document.write( "y=35+.30(y-40/.25) (I'll now write .25 as 1/4 in the denominator)<BR>\n" );
document.write( "y=35+.30(4y-160) (to get rid of the decimal, we'll multiply both sides with 10)<BR>\n" );
document.write( "10y=350+3(4y-160)<BR>\n" );
document.write( "10y=350+12y-480<BR>\n" );
document.write( "group y's in one side <BR>\n" );
document.write( "2y=130<BR>\n" );
document.write( "y=65<BR>\n" );
document.write( "from this, plug in the value of y in any of the equations to find the value of x. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );