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There is no general answer because either method works. And some people are more comfortable following one way while others prefer the other way.

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11y ago

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How do you carry out division when the divisor is not an whole number?

It is often useful to convert division into multiplication, by inverting the fraction; dividing by 2/3 is the same as multiplying by 3/2.


Why is a fraction's denominator a whole number?

A fraction represents a physical counting division into subsets (smaller parts). These parts must nominally be the same size, or multiples of a minimum size. If you had 5 unequal parts, you could not perform any useful calculations. For example: the fraction 4/7.5 is a valid division but not a valid fraction, while 8/15 or 40/75 would be valid equivalents.


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The problem very well could be that it was made in China. I apologize for offering you a cynical answer instead of something more useful, but I honestly couldn't help you with that one.