document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=638702>Question 638702</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me solve this equation <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-21rt%2B8s-28t%2B6rt+ ALIGN=MIDDLE  ALT=\"+-21rt%2B8s-28t%2B6rt+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "this is factor completely </SPAN>\n" );
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document.write( "It's not an equation.<BR>\n" );
document.write( "Equations have equal signs.<BR>\n" );
document.write( " </SPAN>\n" );
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