Question

Could you explain very simply, step by step how to answer this?

Answer 1

The answer is :

`7^(5x+11)`

EXPLANATION :

Note that in dividing expressions with exponents and having the same bases, the exponents are subtracted from each other.

`(a^x)/(a^y)=a^(x-y)`

From the problem, we have :

`\begin{gathered} (7^(5x+20))/(7^9)=7^((5x+20)-9) \\ =7^(5x+11) \end{gathered}`