document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=44888>Question 44888</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello:\r<BR>\n" );
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document.write( "I am asked to solve for x\r<BR>\n" );
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document.write( "x - z = xy + w\r<BR>\n" );
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document.write( "This is a practice exam so I am given the answer of:\r<BR>\n" );
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document.write( "w + z<BR>\n" );
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document.write( "1 - y\r<BR>\n" );
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document.write( "I do not understand how they arrived at this answer.  To be honest I do not understand how to approach this problem.  I can make it this far:<BR>\n" );
document.write( "x - z = xy + w<BR>\n" );
document.write( "x = xy + w + z<BR>\n" );
document.write( "x - xy = w + z\r<BR>\n" );
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document.write( "Thank you very much for your time and help.\r<BR>\n" );
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document.write( "David<BR>\n" );
document.write( "                                  <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #29736 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=29736\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You were 1 step away.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+-+z+=+xy+%2B+w ALIGN=MIDDLE  ALT=\"x+-+z+=+xy+%2B+w\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+xy+%2B+w+%2B+z ALIGN=MIDDLE  ALT=\"x+=+xy+%2B+w+%2B+z\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+-+xy+=+w+%2B+z ALIGN=MIDDLE  ALT=\"x+-+xy+=+w+%2B+z\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "You added z to both sides, then you subtracted<BR>\n" );
document.write( "xy from both sides. Fine so far.<BR>\n" );
document.write( "Now what to do with the <BR>\n" );
document.write( "x - xy<BR>\n" );
document.write( "Substitute numbers for the letters<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+5 ALIGN=MIDDLE  ALT=\"x+=+5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+7 ALIGN=MIDDLE  ALT=\"y+=+7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5+-+5%2A7 ALIGN=MIDDLE  ALT=\"5+-+5%2A7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "or, 5 - 35 = -30<BR>\n" );
document.write( "You should get the same answer if you factor out the 5<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%281+-+7%29 ALIGN=MIDDLE  ALT=\"5%281+-+7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2A%28-6%29+=+-30 ALIGN=MIDDLE  ALT=\"5%2A%28-6%29+=+-30\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "This is called the distributive law of algebra.<BR>\n" );
document.write( "Back to the equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+-+xy+=+w+%2B+z ALIGN=MIDDLE  ALT=\"x+-+xy+=+w+%2B+z\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%281+-+y%29+=+w+%2B+z ALIGN=MIDDLE  ALT=\"x%281+-+y%29+=+w+%2B+z\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "divide both sides by (1 - y)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28w+%2B+z%29+%2F+%281+-+y%29 ALIGN=MIDDLE  ALT=\"x+=+%28w+%2B+z%29+%2F+%281+-+y%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > answer </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );