The problem
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Is 2 the reciperical of 2x. I don understand where the 2 comes from unless it the lowest common denominator.
Answer provided by our tutors
The changing of 4 to 2*2 is simply a feature of the software, in that all integers are prime factored. Prime factorization is a good practice because it helps identify common terms in the numerator and denominator of any fraction and therefore ensures that cancellations are properly recognized.
