Recall that `3\ ln\ 2` means `3\ log_e\ 2`.

`3 ln\ 2+ln(x-1)=ln\ 24`

`ln\ 8+ln(x-1)=ln\ 24`

`ln\ 8(x-1)=ln\ 24`

We take "e to both sides":

`8(x-1)=24`

`x-1=3`

`x=4`