Question

pls answer these questions and I will mark u brainliest
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Answer 1

Please mark it as brainliest.

If abc=1

Then, ac=1/b&b=1/ac

LHS=(1+a+1/b)^-1 +(1+b+1/c)^-1+(1+c+1/a)^-1

=(1+a+ac)^-1+(1+1/ac+1/c)^-1+(a+ac+1/a)^-1

=(1+a+ac)^-1+(ac+1+a/ac)^-1+(1+a+ac/a)^-1

=1/1+a+ac + ac/1+a+ac + a/1+a+ac

=(1+a+ac)/(1+a+ac)

=1

RHS=1

So LHS=RHS(proved).