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Mathematics 7 Online
OpenStudy (anonymous):

Simplify: (q/(q^2-r^2))+r/(r^2-q^2)

OpenStudy (anonymous):

q/(q+r)(q-r) + r/(r+q)(r-q) q/(q+r)(q-r)- r/(q+r)(q-r) q-r/(q+r)(q-r) 1/q+r

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