Question

Simplify. Write the answer in positive exponents.
(15x^-7 y^5)/(5xy^-4)

Answer 1

(15x^-7 y^5)/(5xy^-4)
(15 y^5)* y^4/(5x)x^7
(15 y^9)*/(5x^8)

Answer 2

we have
\[\frac{15x^{-7} y^5}{5xy^{-4}}\]
let's bring x^(-7) to the denominator and y^(-4) to the numerator

we get\[\frac{15y^5\times y^4}{5x^7\times x}\]
we get
\[3 \frac{y^{5+4}}{x^{7+1}}=3\frac{y^9}{x^8}\]