# SOLUTION: how do you find a logarithm set say the question is 7^4x-13=343?

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 Question 313485: how do you find a logarithm set say the question is 7^4x-13=343? Found 2 solutions by nyc_function, nerdybill:Answer by nyc_function(2733)   (Show Source): You can put this solution on YOUR website!Are you looking for x? If so, 434 = 7^3. 7^(4x - 13) = 7^(3) Since we now have the same base 7 on both sides, bring down and equate all exponents. 4x - 13 = 3 4x = 3 + 13 4x = 16 x = 16/4 x = 4 Is this what you need? Answer by nerdybill(6948)   (Show Source): You can put this solution on YOUR website!I think you mean: If not, please write back... .