# How do you simplify (15x^4)/(3x)?

$\frac{15 {x}^{4}}{3 x} = \frac{3 \cdot 5 {x}^{4}}{3 \cdot x} = \frac{5 {x}^{4}}{x} = \frac{x \cdot 5 {x}^{3}}{x} = 5 {x}^{3}$