document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=188025>Question 188025</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/1565771346/algebrahomeworkh>Saxon</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Solve the system by the substitution method:\r<BR>\n" );
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document.write( "x= 4y + 7<BR>\n" );
document.write( "7x + y= 20\r<BR>\n" );
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document.write( "what is x and y? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #140966 by </B><A HREF=/tutors/aboutme.mpl?userid=jojo14344><B>jojo14344(1513)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jojo14344><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=140966\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Tahoma\" size=1.5><BR>\n" );
document.write( "</pre><font size=4><b><BR>\n" );
document.write( "Given;<BR>\n" );
document.write( "x= 4y + 7, EQN 1<BR>\n" );
document.write( "7x + y= 20, EQN 2\r<BR>\n" );
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document.write( "Substitute EQN 1 in EQN 2:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7%28highlight%284y%2B7%29%29%2By=20 ALIGN=MIDDLE  ALT=\"7%28highlight%284y%2B7%29%29%2By=20\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=28y%2B49%2By=20 ALIGN=MIDDLE  ALT=\"28y%2B49%2By=20\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=29y=20-49=-29 ALIGN=MIDDLE  ALT=\"29y=20-49=-29\"   DISABLED_style= \"max-width:90%; height:auto;\" >----><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cross%2829%29y%2Fcross%2829%29=cross%28-29%291%2Fcross%2829%29 ALIGN=MIDDLE  ALT=\"cross%2829%29y%2Fcross%2829%29=cross%28-29%291%2Fcross%2829%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=red%28y=-1%29 ALIGN=MIDDLE  ALT=\"red%28y=-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, substitue in EQN 1<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=4%28-1%29%2B7=-4%2B7=red%283%29 ALIGN=MIDDLE  ALT=\"x=4%28-1%29%2B7=-4%2B7=red%283%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Answer (x,y)=<font color=red>(3,-1)</font>\r<BR>\n" );
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document.write( "We'll see graph:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28400%2C400%2C-5%2C8%2C-5%2C5%2Cgrid%281%29%2Cgraph%28400%2C400%2C-5%2C8%2C-5%2C5%2C%28x-7%29%2F4%2C20-7x%29%2Cblue%28circle%283%2C-1%2C.12%29%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >==> RED, EQN 1 ;; GREEN, EQN 2\r<BR>\n" );
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document.write( "Thank you,<BR>\n" );
document.write( "Jojo</font> </SPAN>\n" );
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