Question

If 7^9/7^n=7^3, then n is __

Answer 1

In order to calculate the value of n, let's use the following property:

`\frac{a^b^{}_{}}{a^c}=a^(b-c)`

So we have:

`\begin{gathered} (7^9)/(7^n)=7^3 \\ 7^(9-n)=7^3 \\ 9-n=3 \\ -n=3-9 \\ -n=-6 \\ n=6 \end{gathered}`

Therefore the correct option is the second one.