Q: What is the common denominator of 30 and 45?

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15

LCD(30, 45) = 90

The common denominator is 30. There are others, but 30 is the LCD.

135 is the lowest common denominator of numbers 27 and 45.

The greatest common denominator is infinite. The least common denominator is 45.

The common denominator of 15 and 9 is 45.

It is 45.

The greatest common denominator of any set of denominators is infinite.The GCF of 36 and 45 is 9.

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

It is 45*31 = 1395.

It is 45 which is also the LCM

The greatest common denominator, like the greatest common multiple, is infinite.

The lowest common denominator is 30

The common denominator of 5 and 6 will be 30.

The greatest common denominator of any set of denominators is infinite.

3

If I wanted to be nasty about it, I would say 1, because the least common denominator of 45/1 and 75/1 is 1. The least common denominator of two fractions is the least common multiple of their denominators. I presume you are asking for the least common multiple of 45 and 75, which is 225.

A common denominator, though not the least, is 30.

30.

30 is.

30

30 is.

9

45

45

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