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9 July, 04:50

What are the key rules when adding and subtracting fractions

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  1. 9 July, 07:45
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    When adding and subtracting fractions, they must have a common denominator. The number on the bottom must be the same in each fraction. For example, you can subtract 2/4-1/4 because the denominator is the same, but you cannot subtract 2/3-1/8 because the denominator is different.
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