# How do you simplify (a^2b)/(a^4b^5)?

$\frac{1}{{a}^{2} \cdot {b}^{4}}$
$\frac{{a}^{2} \cdot b}{{a}^{4} \cdot {b}^{5}} = \frac{1}{{a}^{4 - 2} \cdot {b}^{5 - 1}} = \frac{1}{{a}^{2} \cdot {b}^{4}}$