document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=325290>Question 325290</A>: <I><SPAN STYLE=\"word-break: break-all;\"> pls help me to solve this equation by substitution.<BR>\n" );
document.write( "1.-3x+3y=4<BR>\n" );
document.write( "  -x-2y=11\r<BR>\n" );
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document.write( "2.-3x-4y=2<BR>\n" );
document.write( "  3x+3y=-3\r<BR>\n" );
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document.write( "3.-5x-8y=17<BR>\n" );
document.write( "  2x-7y=-17 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #232947 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=232947\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I'll do the first one to get you started. You should post one problem at a time.\r<BR>\n" );
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document.write( "# 1\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-x-2y=11+ ALIGN=MIDDLE  ALT=\"-x-2y=11+\"   DISABLED_style= \"max-width:90%; height:auto;\" > Start with the second equation.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-x=2y%2B11+ ALIGN=MIDDLE  ALT=\"-x=2y%2B11+\"   DISABLED_style= \"max-width:90%; height:auto;\" > Add 2y to both sides.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-2y-11+ ALIGN=MIDDLE  ALT=\"x=-2y-11+\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply every term by -1\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-3x%2B3y=4 ALIGN=MIDDLE  ALT=\"-3x%2B3y=4\"   DISABLED_style= \"max-width:90%; height:auto;\" > Go to the first equation.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-3%28-2y-11%29%2B3y=4 ALIGN=MIDDLE  ALT=\"-3%28-2y-11%29%2B3y=4\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-2y-11+ ALIGN=MIDDLE  ALT=\"x=-2y-11+\"   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=6y%2B33%2B3y=4 ALIGN=MIDDLE  ALT=\"6y%2B33%2B3y=4\"   DISABLED_style= \"max-width:90%; height:auto;\" > Distribute.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9y%2B33=4 ALIGN=MIDDLE  ALT=\"9y%2B33=4\"   DISABLED_style= \"max-width:90%; height:auto;\" > Combine like terms on the left side.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9y=4-33 ALIGN=MIDDLE  ALT=\"9y=4-33\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=33 ALIGN=MIDDLE  ALT=\"33\"   DISABLED_style= \"max-width:90%; height:auto;\" > from both sides.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9y=-29 ALIGN=MIDDLE  ALT=\"9y=-29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Combine like terms on the right side.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-29%2F9 ALIGN=MIDDLE  ALT=\"y=-29%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9 ALIGN=MIDDLE  ALT=\"9\"   DISABLED_style= \"max-width:90%; height:auto;\" > to isolate <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y ALIGN=MIDDLE  ALT=\"y\"   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=-2y-11+ ALIGN=MIDDLE  ALT=\"x=-2y-11+\"   DISABLED_style= \"max-width:90%; height:auto;\" > Go back to the previously isolated equation.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-2%28-29%2F9%29-11+ ALIGN=MIDDLE  ALT=\"x=-2%28-29%2F9%29-11+\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-29%2F9 ALIGN=MIDDLE  ALT=\"y=-29%2F9\"   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=58%2F9-11+ ALIGN=MIDDLE  ALT=\"x=58%2F9-11+\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-41%2F9+ ALIGN=MIDDLE  ALT=\"x=-41%2F9+\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract.\r<BR>\n" );
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document.write( "So the solutions are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-41%2F9+ ALIGN=MIDDLE  ALT=\"x=-41%2F9+\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-29%2F9 ALIGN=MIDDLE  ALT=\"y=-29%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" > which form the ordered pair <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \left(-\frac{41}{9},-\frac{29}{9}\right)\"> </SPAN>\n" );
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