I just had an exam that I am nervous about, and at some point I had to factorize
$$ \frac{1}{\lambda} $$
or $$ \lambda$$ out of the following expression that I wrote up from memory(don't have access to what I handed in):
$$ \frac{1}{\lambda} (2n) - \frac{1}{\lambda^{3}}\sum_{i}^{n} (Y_{i}) = -n\log{(2)} - 2n $$
My plan was to factorize $\frac{1}{\lambda}$ out and then I could divide both sides with the term inside of the parenthesis. Is that even possible? I might've taken a wrong turn earlier in the assignment, I think. Would have to had been done by hand in the exam.
EDIT: The goal is to isolate lambda from everything else.