Question

How do you solve `3^ { 3x - 1} = 243`?

Answer 1

`x=2`

Explanation:

the key is to change the base numbers to the same value

we note that `243=3^5`

`:.3^(3x-1)=243=3^5`

`=>3x-1=5`

solving for `x`

`x=2`