Question

log3(x-1) = 2log3 2- log3 15

Answer 1

$log_3(x-1)=log_3 frac{4}{15} ; x-1= frac{4}{15};x= frac{19}{15}$

Answer 2

$log_3(x-1)=2log_32-log_315=log_34-log_315=log_3frac{4}{15}\x-1=frac{4}{15}\x=1frac{4}{15}$