Solve the following logarithmic equation. Express irrational solutions in exact form. 1 log 7x=3 log 72 Rewrite the given equation without logarithms. Do not solve for x. (Do not simplify. Use integers or fractions for any numbers in the equation.) Solve the equation obtained in the previous step for x. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The solution set is {}. (Simplify your answer. Use a comma to separate answers as needed. Use integers or fractions for any numbers in the expression. Type an exact answer, using radicals as needed.) O B. There is no solution.

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