document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=177054>Question 177054</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how do i solve y=2x; x+2y=8 using substitution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #132141 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=132141\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Take the expression for y given by your first equation and substitute (hence the name of the method) that expression in x for y in the second equation, like this:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+2x ALIGN=MIDDLE  ALT=\"y+=+2x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+%2B+2y+=+8 ALIGN=MIDDLE  ALT=\"x+%2B+2y+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" > therefore <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+%2B+2%282x%29+=+8 ALIGN=MIDDLE  ALT=\"x+%2B+2%282x%29+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" > => <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x+=+8 ALIGN=MIDDLE  ALT=\"5x+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" > => <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+8%2F5 ALIGN=MIDDLE  ALT=\"x+=+8%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Substitute (there's that word again) this value you determined for x back into the first equation, thus:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+2%288%2F5%29+=+16%2F5 ALIGN=MIDDLE  ALT=\"y+=+2%288%2F5%29+=+16%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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