<PRE><B>Question 203585</B>
      a+4    a+4
    ------=-----
       2     a
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least common denominator = 2a
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Rewrite each fraction with the lcd as its denominator:
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[a(a+4)/lcd] - [2(a+4)/lcd]
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Combine the numerators over the lcd:
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[a^2+4a -2a - 8]/lcd
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[a^2 + 2a - 8]/[2a]
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Cheers,
Stan H.</PRE>