are different. You can only add and subtract fractions when the bottom numbers, or denominators, are the same. You can use this method to add or subtract fractions: Multiply the two terms on the ...
Look at the examples below on how to add and subtract fractions and mixed numbers. The denominators are different (4 and 9). The lowest common multiple (LCM) of 4 and 9 is the common denominator ...
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