document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=473423>Question 473423</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sum of two decimal numbers is 3.9. Their difference is 0.9, and their product is 3.6  What are the two numbers? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #324657 by </B><A HREF=/tutors/aboutme.mpl?userid=ccs2011><B>ccs2011(207)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ccs2011><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=ccs2011><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=324657\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let a and b be the 2 numbers:<BR>\n" );
document.write( "a + b = 3.9<BR>\n" );
document.write( "a - b = 0.9<BR>\n" );
document.write( "a*b = 3.6<BR>\n" );
document.write( "Lets solve for a in 2nd equation:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+-+b+=+0.9 ALIGN=MIDDLE  ALT=\"a+-+b+=+0.9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Add b on both sides<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+=+b+%2B+0.9 ALIGN=MIDDLE  ALT=\"a+=+b+%2B+0.9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now substitute this in for a in 1st equation:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28b%2B0.9%29+%2B+b+=+3.9 ALIGN=MIDDLE  ALT=\"%28b%2B0.9%29+%2B+b+=+3.9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Add like terms<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2b+%2B+0.9+=+3.9 ALIGN=MIDDLE  ALT=\"2b+%2B+0.9+=+3.9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Subtract 0.9 on both sides<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2b+=+3 ALIGN=MIDDLE  ALT=\"2b+=+3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Divide by 2 on both sides<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b+=+1.5 ALIGN=MIDDLE  ALT=\"b+=+1.5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Substitute this value in for b to solve for a:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+=+b+%2B+0.9 ALIGN=MIDDLE  ALT=\"a+=+b+%2B+0.9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+=+1.5+%2B+0.9 ALIGN=MIDDLE  ALT=\"a+=+1.5+%2B+0.9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+=+2.4 ALIGN=MIDDLE  ALT=\"a+=+2.4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Therefore the 2 numbers are 1.5 and 2.4<BR>\n" );
document.write( "You can check that 1.5*2.4 = 3.6 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );