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Using log laws:

log(a) + log(b) + log(c) = log(abc)

Therefore,

log(abc) = log(a + b + c)

abc = a + b + c

Where,

abc, a, b, c > 0

So from here you just rearrange in terms of a:

a = (b + c) / (bc - 1)

...and pick any value for b and c which are greater than 0. Such as:

b = 2, c = 1

a = (2 + 1) / (2*1 - 1) = 3

__@_'-'

Interesting cases:

a = b = c = root(3)

a = b = (1 + root(5))/2, c = 2

__@_'-'

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