document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=179434>Question 179434</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Match\r<BR>\n" );
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document.write( "x=7y+11<BR>\n" );
document.write( "3x+20y=99\r<BR>\n" );
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document.write( "12x-7y=11<BR>\n" );
document.write( "3x+20y=99\r<BR>\n" );
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document.write( "which is substitution and addition method?<BR>\n" );
document.write( "How did you conclude your answer </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #134365 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=134365\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We can solve the first system by substitution. We could use elimination/addition, but substitution is much easier. Why? Notice how \"x\" is already isolated. So we can simply plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=7y%2B11 ALIGN=MIDDLE  ALT=\"x=7y%2B11\"   DISABLED_style= \"max-width:90%; height:auto;\" > in the second equation and solve for \"y\"\r<BR>\n" );
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document.write( "The second system can be solved much easier via elimination/addition. If we multiply the second equation by -4, we get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-12x-80y=-396 ALIGN=MIDDLE  ALT=\"-12x-80y=-396\"   DISABLED_style= \"max-width:90%; height:auto;\" >. If we add this new equation to equation 1, the \"x\" terms will cancel out which will let us solve for y. </SPAN>\n" );
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