Question

Please help me solve the expression for “n”

Answer 1

n = 2

Explanation:

In order for the ratio to have a value of 1, the sum of exponents in the numerator must equal the sum of exponents in the denominator:

n + 7 = 9

n = 9 -7 . . . . . . subtract 7 from both sides of the equation

n = 2

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Alternatively, you can simplify the given expression:

`(9^n(9^7))/(9^9)=1=(9^n)/(9^2)`

Hopefully, it is clear to you that the value of n must be 2 in order to make the numerator equal to the denominator.