document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=9540>Question 9540</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how can I solve this expression help please :\r<BR>\n" );
document.write( "\n" );
document.write( " 13- 3a for a = -1  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #5233 by </B><A HREF=/tutors/aboutme.mpl?userid=thecampusnerd><B>thecampusnerd(13)</B></A><img src=\"/images/stars/stars-06.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=thecampusnerd><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=5233\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Alright, since a = -1, plug -1 in for \"a\". \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Your equation will come out like this: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=13-3%28-1%29 ALIGN=MIDDLE  ALT=\"13-3%28-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Now use your Order of Operations. Notice that the 3 has a minus sign in front of it. Because of that very minus sign, we're going to call it -3. Using the Order of Ops, you'll mulitiply -3 by -1, which is positive 3 (A negative times a negative equals a positive. The negatives cancel each other out.)\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Because the 3 is now positive, you're going to change the expression from 13 - 3 to 13 + 3.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Do the math and you have your answer. 13 + 3 = 16.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Now, let's see it in the less wordy version...\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=13-3a ALIGN=MIDDLE  ALT=\"13-3a\"   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=13-3%28-1%29 ALIGN=MIDDLE  ALT=\"13-3%28-1%29\"   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=13%2B3=16 ALIGN=MIDDLE  ALT=\"13%2B3=16\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );