"You are given a list of fractions, each tuple consisting of a nominator and a denominator.. Your job is to transform each item such that the resulting fractions have their original value, but share the same denominator. It's quite clear from the example in the description what this is all about."

Your answer has a little more than one line, and yet is way better than the entire description of the kata. OP has an excelent point, the description is way to much that confuses more than describes.