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**1. The problem statement, all variables and given/known data**

How do i solve for the subscript in:

(log (sub5)) / 2 = log(sub x)

**2. Relevant equations**

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**3. The attempt at a solution**

the original question was:

(log(subx)7)(log(sub7)5)=2

solve for x.

however i dont get how to solve for a subscript....