Least Common Denominator of 3, 9 and 27 (LCD of 3, 9 and 27)

Least Common Denominator (LCD) of 3, 9, and 27

The Least Common Denominator of 3, 9 and 27, also known as the Lowest Common Denominator of 3, 9 and 27, is useful if you need to add, subtract, or compare three fractions with the denominators of 3, 9 and 27.

The fractions with 3, 9 and 27 denominators will look like this:

		X
		3

		Y
		9

		Z
		27

The Least Common Denominator of 3, 9 and 27 is 27.

You need to multiply 3 by 9, 9 by 3, and 27 by 1 to make them all 27. 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 value and get the same denominator:

		X x 9
		3 x 9

		Y x 3
		9 x 3

		Z x 1
		27 x 1

Which gives you the following three new fractions that you can add, subtract and compare:

		9X
		27

		3Y
		27

		1Z
		27

You can substitute X, Y and Z with the numerators of your fractions with 3, 9 and 27 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 3, 9 and 28
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Notes

The Least Common Denominator of 3, 9 and 27 is the same as the Least Common Multiple of 3, 9 and 27.

To calculate what to multiply each denominator and corresponding numerator by, we divided the LCD by each of the denominators.