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A variable line ax+by+c=0 , where a, b, ...

A variable line ax+by+c=0 , where a, b, c are in A.P. is normal to a circle `(x-alpha)^2+(y-beta)^2=gamma`, which is orthogonal to circle `x^2+y^2-4x-4y-1=0` .The value of `alpha + beta+ gamma` is equal to

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