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21 If a b c are real numbers such that ab/a+b =1/3 bc/b+c=1/4 ca/c+a=1/5 then find the valie of abc/ab+bc+ca

Answer» 21 If a b c are real numbers such that ab/a+b =1/3 bc/b+c=1/4 ca/c+a=1/5 then find the valie of abc/ab+bc+ca


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