Question

Simplify without negative exponents.

Answer 1

So, you know the rules of exponents?

\(\LARGE\color{black}{ \frac{1}{x^a}=x^{-a} }\)

And then,
\(\LARGE\color{black}{ x^{-b} \times x^{-c}=x^{-b-c}=\frac{1}{x^{b+c}} }\)

Answer 2

or you can just subtract -4 -7 in the exponent