document.write( "Question 1033997: for what value(s) of r is the rational expression undefined 3r+3/3r-3 \n" ); document.write( "
Algebra.Com's Answer #648591 by ikleyn(52797)\"\" \"About 
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\n" ); document.write( "r = 1.\r
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\n" ); document.write( "\n" ); document.write( "Use parentheses.\r
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