Question

How do you solve `2^(3x+5)=128`?

Answer 1

The solution is `x=2/3`

Explanation:

`128=2*2*2*2*2*2*2=2^7`

`2^(3x+5)=2^7`

So,

`3x+5=7`

`3x=7-5=2`

`x=2/3`