If sum(i=1)^(n)(r)/(1*3*5*7.........(2r+...

If `sum_(i=1)^(n)(r)/(135*7.........(2r+1))=(a)/(b)(1-(c)/(135........(2n+1)))` where `a,b,c in N, altb` and `b` is a prime number then find the value of `(a+b+c)`

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