Least Common Denominator (LCD) of 11 and 13
The Least Common Denominator of 11 and 13, also known as the Lowest Common Denominator of 11 and 13, is useful if you need to add, subtract, or compare two fractions with the denominators of 11 and 13.
The fractions with 11 and 13 denominators will look like this:
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The Least Common Denominator of 11 and 13 is 143.
You need to multiply 11 by 13 and 13 by 11 to make them both 143. Furthermore, you need to multiply the numerators by the same amounts to keep the fraction values the same.
Therefore, you have to make the following calculations so the fractions keep the same values and get the same denominator:
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Which gives you the following two new fractions that you can add, subtract and compare:
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You can substitute X and Y with the numerators of your fractions with 11 and 13 denominators. This way you can add, subtract and compare your fractions correctly.
Least Common Denominator Calculator
Please enter another two or three denominators below so we can calculate the Least Common Denominator (LCD) for you:
Least Common Denominator (LCD) of 11 and 14
Here is the next set of numbers we have calculated the LCD for.
Notes
The Least Common Denominator of 11 and 13 is the same as the Least Common Multiple of 11 and 13.
To calculate what to multiply each denominator and corresponding numerator by, we divided the LCD by each of the denominators.