Q: What is the common denominator of 3 over 4 and 15 over 20?

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The denominators of 20 and 15 are both 1, therefore, the lowest common denominator is 1.

7/15 = 28/60 19/20 = 57/60

60

The least common denominator (LCD) is 1.

A common denominator, though not the least one, is 200.

20 is.

300

60

4/9 = 20/45 8/15 = 24/45

Least common denominator is used for fractions, not integers. Integers can be expressed as fractions, though, by placing them over 1 so if you really meant least common denominator then the answer is 1. If, however, you meant least common multiple, then then answer is 60.

A common denominator of 20 and 30 is 600. This is NOT the least common denominator, though.

The is no "largest" common denominator. For any denominator you find, we can multiply it by a natural number and come up with a larger one. Do you mean LEAST COMMON DENOMINATOR?

60

20

20

In order to solve this problem, we must find a common denominator. For these two fractions, we'll use 20 as the common denominator. This gives us: 16/20 + 15/20 Add the numerators and you get 31/20 or 1 and 11/20.

20 is the lowest common denominator for 4 and 10.

LCD(8, 20, 15) = 120

The lowest common denominator of any set of whole numbers is 1

20

40 is.

The LCD for 3/20 and 9/4 is 20

1/5 + 3/4 First you have to find the common Denominator. The common denominator is 20. 1/5 = 4/20 (5x4=20, so you have to multiply the 1 by 4 as well) 3/4=15/20 (4x5=20 and 3x5=15) Now that you know your common denominator is 20, you can now add your fractions. 4/20 + 15/20 = 19/20 (you only add the numerator, the denominator stays the same) so, your answer is...... 19/20

180

The common denominator of three fourths and one fifth is twenty. The fractions including the common denominator can look like this: 3/4 to 15/20 and 1/5 to 4/20. Hope this helps!! ^^

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