Question

$If |a-b| =1 ; \\ |b-c| =1 ; \\ |c-a| = 2 \: and \\ abc = 60 \\ \\ \ \textless \ br /\ \textgreater$
Find
$\frac{a}{bc} + \frac{b}{ca} + \frac{c}{ba} - \frac{1}{a} - \frac{1}{b} - \frac{1}{c}$
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Answer 1

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Answer 2

Answer:

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