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Mathematics 10 Online
OpenStudy (anonymous):

[1/(5+x)] - [1/(5-x)]

OpenStudy (turingtest):

find the common denominator between 5-x and 5+x the LCM is (5-x)(5+x) multiply the expression you have by the LCM on both the top and bottom of the fraction, then simplify

OpenStudy (turingtest):

LCM=Least Common Multiple

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