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If 
7^(a)=root(8)(7), what is the value of 
a ?

If 7a=78 7^{a}=\sqrt[8]{7} , what is the value of a a ?

Full solution

Q. If 7a=78 7^{a}=\sqrt[8]{7} , what is the value of a a ?
  1. Given Equation: We are given the equation 7a=787^{a} = \sqrt[8]{7}. To solve for aa, we need to express both sides of the equation with the same base and exponent format.
  2. Express with Same Base: The eighth root of a number is the same as raising that number to the power of 18\frac{1}{8}. Therefore, we can rewrite the equation as 7a=7187^{a} = 7^{\frac{1}{8}}.
  3. Equate Exponents: Now we have 7a=7187^{a} = 7^{\frac{1}{8}}. Since the bases are the same, we can equate the exponents: \newlinea=18a = \frac{1}{8}
  4. Final Answer: We have found the value of aa to be 18\frac{1}{8}, which is the final answer.