Question

How do you solve `(7^x)^3 = 7^15`?

Answer 1

`x=5`

Explanation:

As `(a^m)^n=a^(mxxn)`

`(7^x)^3=7^15`can be written as

`7^(3xx x)=7^15`

or `7^(3x)=7^15`

i.e. `3x=15`

i.e. `x=15/3=5`