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OpenStudy (anonymous):
Whats the simplified form of : 1/b-1/a / 1/b+1/a
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OpenStudy (zzr0ck3r):
((1/b)-(1/a))/((1/b)+(1/a)) = ((a-b)/ba)/((a+b)/ba) = (a-b)/(ab)*(ab)/(a+b) = (a-b)/(a+b) as long as a or b (or both) are not zero
OpenStudy (cwrw238):
make both of the expressions into one fraction and divide
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