document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=651531>Question 651531</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Translate to a system of equations and solve.<BR>\n" );
document.write( "The sum of two numbers is 8. Their difference is 12. Find the number.<BR>\n" );
document.write( "So far I have:   x+y= 30<BR>\n" );
document.write( "                 x-y= 12<BR>\n" );
document.write( "I don't know what I have to do to solve for the numbers. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #407699 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</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=407699\">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=x%2By=+30 ALIGN=MIDDLE  ALT=\"x%2By=+30\"   DISABLED_style= \"max-width:90%; height:auto;\" >....1\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x-y=+12 ALIGN=MIDDLE  ALT=\"x-y=+12\"   DISABLED_style= \"max-width:90%; height:auto;\" >....2<BR>\n" );
document.write( "__________________\r<BR>\n" );
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document.write( "you can solve this system by addition; add 1 and 2\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=+30 ALIGN=MIDDLE  ALT=\"x%2By=+30\"   DISABLED_style= \"max-width:90%; height:auto;\" >....1<BR>\n" );
document.write( "+<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x-y=+12 ALIGN=MIDDLE  ALT=\"x-y=+12\"   DISABLED_style= \"max-width:90%; height:auto;\" >....2<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2Bx%2By%2B%28-y%29=30%2B12 ALIGN=MIDDLE  ALT=\"x%2Bx%2By%2B%28-y%29=30%2B12\"   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=2x%2Bcross%28y%29%2B%28-cross%28y%29%29=42 ALIGN=MIDDLE  ALT=\"2x%2Bcross%28y%29%2B%28-cross%28y%29%29=42\"   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=2x=42 ALIGN=MIDDLE  ALT=\"2x=42\"   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=42%2F2 ALIGN=MIDDLE  ALT=\"x=42%2F2\"   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=highlight%28x=21%29 ALIGN=MIDDLE  ALT=\"highlight%28x=21%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "now find <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" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21%2By=+30 ALIGN=MIDDLE  ALT=\"21%2By=+30\"   DISABLED_style= \"max-width:90%; height:auto;\" >....1\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=+30-21 ALIGN=MIDDLE  ALT=\"y=+30-21\"   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=highlight%28y=+9%29 ALIGN=MIDDLE  ALT=\"highlight%28y=+9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );