Explanation: When dividing fractions, we change the division into multiplication and flip the second fraction.
This means that for the given: [tex] \frac{3}{j} / \frac{9}{j} = \frac{3}{j} * \frac{j}{9} [/tex]
Now, when multiplying fractions, we multiply the numerators together and the denominators together. Therefore: [tex] \frac{3}{j} * \frac{j}{9} = \frac{3j}{9j} [/tex]
Simplifying the product, we would end up with [tex] \frac{1}{3} [/tex]