$\log(a-b)=\log a-\log b$ ise $a$'yı $b$ cinsinden bulunuz.
İpucu:
$$\log (a-b)=\log a -\log b$$$$\Rightarrow$$$$\log (a-b)=\log \frac{a}{b}$$$$\overset{?}\Rightarrow$$$$a-b=\frac{a}{b}$$$$\overset{?}\Rightarrow$$$$ab-b^2=a$$
$a=b+1+\frac{1}{b-1}$