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Least common denominator.

Used in fractions.

For example : 1/2 and 3/4

The fraction that has the lowest denominator, while still having an equivalent fraction is the LCD.

In this case it would be 2/4 and 3/4. Because 1/2 = 2/4, and the lowest common denominator between the two fractions is 4. Hope this helps ! :D

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14y ago

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More answers

One common use is to add, subtract, or compare two fractions. Any common denominator can be used for this purpose - for example, just multiplying the denominators will work. But finding the least common denominator helps by letting you work with smaller numbers later, and requiring less work for the simplification of the resulting fraction.

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Wiki User

12y ago
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Least Common Denominator. Derived in the same way as the Least Common Multiple (LCM).

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Wiki User

15y ago
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It helps one find a number so two fractions can be combine

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Wiki User

15y ago
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LCD stands for Lowest or Least Common Denominator. It's just like the LCM (Least Common Multiple) and is used to make fractions suitable for addition and subtraction.

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Wiki User

13y ago
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Least Common Denominator

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Wiki User

12y ago
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Lowest common denominator

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Wiki User

12y ago
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Lowest common denominator

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Wiki User

12y ago
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Q: What is the LCD use for in math?
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