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If the denominators are the same number, add the numerators together and put that total over the original denominator. Reduce if possible. 1/4 + 2/4 = 3/4

3/8 + 3/8 = 6/8 = 3/4

If the denominators are different numbers, it is necessary to find a common denominator. Find the Lowest Common Multiple (LCM) of the denominators (also known as the Lowest Common Denominator, or LCD) and convert the fractions to equivalent fractions with the same denominator. Now that they have the same denominator, proceed as above. 1/4 + 1/6 = 3/12 + 2/12 = 5/12

If you are struggling to find the LCM just multiply the denominators together - it just means that you will likely be working with larger numbers than if you had used the LCM.

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Q: How do you add and subtract fractions?
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