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First you get a common denominator, for example, 1/4 - 1/2 would be changed to 1/4 - 2/4 because what ever you do to change to denominator, you have to do the same with the numerator.

Then you subtract the numerators and keep the denominator the same. Example: 1/4 - 2/4= -1/4.

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13y ago

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