document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=649946>Question 649946</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Which expression uses the commutative property of addition to make an expression equivalent to 3x+4x+9? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #417562 by </B><A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><B>ReadingBoosters(3246)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><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=417562\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Think of commutative as in terms of driving to school and returning back home.<BR>\n" );
document.write( "The distance both ways is the same on the \"commute.\"<BR>\n" );
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document.write( "9 + 4x + 3x = 3x + 4x + 9\r<BR>\n" );
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