Question 207515
{ 1/(3+x) -1/3} /x,,,,,invert  and  multiply
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{1/(3+x) -1/3} * 1/x
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find  LCD  and  simplify
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[ {3-(3+x)}/ 3(3+x) ] * 1/x
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[ { -x/(9+3x)} ] * 1/x
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-1/(9+3x)
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check,,,let  x=2,,,both  answer  and  original  = -1/15,,,,ok
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