Hey!
Hope this helps...
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So we know that all the denominators are multiples of 3, and the numerators are multiples of 2...
we also know that the fraction 5/6 is a dummy fraction (which means, it will not help us at all)
We know that the numerators (from 5/9 and on), are constantly multiplied by 2, and the denominators (from 5/9 and on) are constantly multiplied by 3...
So by this information, we know that the answer must be 40/243
This is because 20 * 2 = 40
And 81 * 3 = 243
So... put them together, and you get 40/243