Least Common Denominator of 2, 4 and 78 (LCD of 2, 4 and 78)

Least Common Denominator (LCD) of 2, 4, and 78

The Least Common Denominator of 2, 4 and 78, also known as the Lowest Common Denominator of 2, 4 and 78, is useful if you need to add, subtract, or compare three fractions with the denominators of 2, 4 and 78.

The fractions with 2, 4 and 78 denominators will look like this:

		X
		2

		Y
		4

		Z
		78

The Least Common Denominator of 2, 4 and 78 is 156.

You need to multiply 2 by 78, 4 by 39, and 78 by 2 to make them all 156. 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 78
		2 x 78

		Y x 39
		4 x 39

		Z x 2
		78 x 2

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

		78X
		156

		39Y
		156

		2Z
		156

You can substitute X, Y and Z with the numerators of your fractions with 2, 4 and 78 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 2, 4 and 79
Here is the next set of numbers we have calculated the LCD for.

Notes

The Least Common Denominator of 2, 4 and 78 is the same as the Least Common Multiple of 2, 4 and 78.

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