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OpenStudy (anonymous):
(5/x+3) - (9/x-3)
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OpenStudy (anonymous):
\[\frac{5}{x+3}-\frac{9}{x-3}=\frac{5(x-3)-9(x+3)}{(x+3)(x-3)}\]\ \[=\frac{5x-15-9x-27}{x^2-9}=\frac{-4x-42}{x^2-9}\]\]
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