document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1176314>Question 1176314</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the system for x and​ y, expressing either value in terms of​ a, if necessary. Assume that a ≠ 0.\r<BR>\n" );
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document.write( "7ax + 2y = 20<BR>\n" );
document.write( "ax + 3y = -8\r<BR>\n" );
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document.write( "Select the correct choice below​ and, if​ necessary, fill in the answer box within your choice.\r<BR>\n" );
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document.write( "A.<BR>\n" );
document.write( "The solution set is {__} ​(Simplify your answer. Type an ordered​ pair.)\r<BR>\n" );
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document.write( "B. There are infinitely many solutions. The solution set is {(x,y)|__}.<BR>\n" );
document.write( "​(Simplify your answer. Type an​ equation.)\r<BR>\n" );
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document.write( "C. There is no solution. The solution set is Ø. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #802930 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20849)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=802930\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7ax+%2B+2y+=+20+ ALIGN=MIDDLE  ALT=\"7ax+%2B+2y+=+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" >....eq.1<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ax+%2B+3y+=+-8 ALIGN=MIDDLE  ALT=\"ax+%2B+3y+=+-8\"   DISABLED_style= \"max-width:90%; height:auto;\" >......eq.2<BR>\n" );
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document.write( "start with \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7ax+%2B+2y+=+20+ ALIGN=MIDDLE  ALT=\"7ax+%2B+2y+=+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" >....solve for <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=2y+=+20+-7ax ALIGN=MIDDLE  ALT=\"2y+=+20+-7ax\"   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=y+=+10+-7ax%2F2+ ALIGN=MIDDLE  ALT=\"y+=+10+-7ax%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >.......a)\r<BR>\n" );
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document.write( "then do same with\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ax+%2B+3y+=+-8 ALIGN=MIDDLE  ALT=\"ax+%2B+3y+=+-8\"   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=+3y+=+-8-ax++ ALIGN=MIDDLE  ALT=\"+3y+=+-8-ax++\"   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=y+=+-8%2F3-ax%2F3 ALIGN=MIDDLE  ALT=\"y+=+-8%2F3-ax%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >.............b)\r<BR>\n" );
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document.write( "from a) and b) we have\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10+-7ax%2F2+=-8%2F3-ax%2F3 ALIGN=MIDDLE  ALT=\"10+-7ax%2F2+=-8%2F3-ax%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > ........solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   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=10+%2B8%2F3+=7ax%2F2-ax+%2F3 ALIGN=MIDDLE  ALT=\"10+%2B8%2F3+=7ax%2F2-ax+%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >...........both sides multiply by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6 ALIGN=MIDDLE  ALT=\"6\"   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=60+%2B16+=21ax-2ax+ ALIGN=MIDDLE  ALT=\"60+%2B16+=21ax-2ax+\"   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=76+=19ax+ ALIGN=MIDDLE  ALT=\"76+=19ax+\"   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=76%2F19a=x ALIGN=MIDDLE  ALT=\"76%2F19a=x\"   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=4%2Fa ALIGN=MIDDLE  ALT=\"x=4%2Fa\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "go to\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-8%2F3-ax%2F3 ALIGN=MIDDLE  ALT=\"y+=+-8%2F3-ax%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >......substitute <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   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=y+=+-8%2F3-a%284%2Fa%29%2F3 ALIGN=MIDDLE  ALT=\"y+=+-8%2F3-a%284%2Fa%29%2F3\"   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=y+=+-8%2F3-4%2F3 ALIGN=MIDDLE  ALT=\"y+=+-8%2F3-4%2F3\"   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=y+=+-12%2F3 ALIGN=MIDDLE  ALT=\"y+=+-12%2F3\"   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=y+=+-4 ALIGN=MIDDLE  ALT=\"y+=+-4\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "solution:(<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2Fa ALIGN=MIDDLE  ALT=\"4%2Fa\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-4 ALIGN=MIDDLE  ALT=\"+-4\"   DISABLED_style= \"max-width:90%; height:auto;\" >) \r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );