# How do you simplify (3x^-4)/(15y) and write it using only positive exponents?

Aug 28, 2016

3/(15x ^4y)

#### Explanation:

${x}^{0} / {x}^{4}$=${x}^{-} 4$
When dividing we subtract the index numbers

But ${x}^{0} / {x}^{4} = \frac{1}{x} ^ 4$

So in the original expression we replace ${x}^{-} 4$ with $\frac{1}{x} ^ 4$