Level
2

If \(a\),\(b\) and \(c\) are real numbers such that :

\(\dfrac{a-c}{b+c}+\dfrac{b-a}{c+a}+\dfrac{c-b}{a+b}=1\) then what is the value of :\(\dfrac{a+b}{b+c}+\dfrac{b+c}{c+a}+\dfrac{c+a}{a+b}=\)?

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