Question

-
$(- 7)^{ - 3} \div ( - 21)^{ - 1}$
​

Answer 1

I hope my answer is right

Answer 2

Answer:

$\frac{1}{ {7}^{3} } \times {21}^{1} \\ \\ \frac{1}{ {7}^{1} } \times 21 \\ \\ \frac{21}{ {7}^{3} } \\ \\ \\ \frac{21}{343 } \\ \\ \\ soltution \\ \frac{3}{49}$