document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=769999>Question 769999</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how do i solve \r<BR>\n" );
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document.write( "9x-2y=3<BR>\n" );
document.write( "3x-y=6 \r<BR>\n" );
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document.write( "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 #469180 by </B><A HREF=/tutors/aboutme.mpl?userid=kmadison><B>kmadison(20)</B></A><img src=\"/images/stars/stars-06.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=kmadison><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=kmadison><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=469180\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> so 1st lets solve the 2nd equation for y:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-y+=+6+-+3x ALIGN=MIDDLE  ALT=\"-y+=+6+-+3x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+3x+-+6 ALIGN=MIDDLE  ALT=\"y+=+3x+-+6\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "now we plug in for y in the 1st equation:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9x+-+2%283x+-+6%29+=+3 ALIGN=MIDDLE  ALT=\"9x+-+2%283x+-+6%29+=+3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "now we solve for x:<BR>\n" );
document.write( "1st: Rewrite the expression: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9x+-+6x+%2B+12+=+3 ALIGN=MIDDLE  ALT=\"9x+-+6x+%2B+12+=+3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "2nd: Combine like terms: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x+=+-9 ALIGN=MIDDLE  ALT=\"3x+=+-9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+-3 ALIGN=MIDDLE  ALT=\"x+=+-3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "now going back to the 1st expression we can plug in -3 for x:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+3%28-3%29+-+6 ALIGN=MIDDLE  ALT=\"y+=+3%28-3%29+-+6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-15 ALIGN=MIDDLE  ALT=\"y+=+-15\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "so our final result is (-3, -15) which we can verify in both expressions:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%28-3%29+-+2%28-15%29+=+3 ALIGN=MIDDLE  ALT=\"9%28-3%29+-+2%28-15%29+=+3\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%28-3%29+-+%28-15%29+=+6 ALIGN=MIDDLE  ALT=\"3%28-3%29+-+%28-15%29+=+6\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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