document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=54202>Question 54202</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It's been a long time since I've done algebra....I'm a 43 yr old Dad...trying to help my 15 yr old daughter with homework (she's gone right now) explain to me if you please how to solve this equation:<BR>\n" );
document.write( "2x - 5y =9<BR>\n" );
document.write( "      y = 3X - 7\r<BR>\n" );
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document.write( "Thanks for your help in advance.....Don Gillis </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #36477 by </B><A HREF=/tutors/aboutme.mpl?userid=Nate><B>Nate(3500)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Nate><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=36477\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There are two main ways of easily solving these, but you would simply use substitution.<BR>\n" );
document.write( "Remember, the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y ALIGN=MIDDLE  ALT=\"y\"   DISABLED_style= \"max-width:90%; height:auto;\" > value is equal to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x+-+7 ALIGN=MIDDLE  ALT=\"3x+-+7\"   DISABLED_style= \"max-width:90%; height:auto;\" >. You would just put that value in for the second equation.<BR>\n" );
document.write( "2x - 5y = 9<BR>\n" );
document.write( "2x - 5(3x - 7) = 9<BR>\n" );
document.write( "2x - 15x + 35 = 9<BR>\n" );
document.write( "-13x = -26<BR>\n" );
document.write( "x = 2<BR>\n" );
document.write( "Remember: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+3x+-+7 ALIGN=MIDDLE  ALT=\"y+=+3x+-+7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+3%282%29+-+7+=+6+-+7+=+-1 ALIGN=MIDDLE  ALT=\"y+=+3%282%29+-+7+=+6+-+7+=+-1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Answer: x = 2 and y = -1<BR>\n" );
document.write( "You can also solve this by graphing each line:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C300%2C-5%2C5%2C-5%2C5%2C3x+-+7%2C%282x-9%29%2F5%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C300%2C-5%2C5%2C-5%2C5%2C3x+-+7%2C%282x-9%29%2F5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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