It is 45.
the common denominator for 9/8 and 7/20 is 40. (45/40 and 14/40)
you can get a common denominator by multiplying the denominators together For example 1/5 plus 1/9 common denominator is 5 x 9 = 45 9/45 + 5/45 = 14/45
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*31 = 1395.
It is 45 which is also the LCM
The greatest common denominator of any set of denominators is infinite.The GCF of 36 and 45 is 9.
3
There are infinitely many common denominators and so it makes no sense to ask about the common denominator. For example, 45000 is a common denominator.
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.
The common denominator of four fifths and two ninths is 45.