There is some form of communal worship, and there is communal support of the clergy. There aren't many other things that would be absolutely the same across all denominations.
You need at least two numbers to find something in common. 90 can be a common denominator of other numbers, but it can't have a common denominator all by itself.
This does not have an answer as it is asked. The key word is common. In order for a denominator to be common, you need 2 or more numbers to get something that is common to all of them.
That's a "common" denominator. "Common" means "same for both" or "same for all".
You DO need a common denominator to add, subtract, or compare fractions. You DO NOT need a common denominator to multiply or divide fractions.
There is no such thing.
There can be no greatest common denominator. If you have a set a numbers whose least common denominator is L then 2*L, 3*L, … are all common denominators. There is no end to that sequence and so no greatest.
If there is no common factor, as in this case, you just have to multiply all the factors together to get the common denominator.
They do. They are all integers so their common denominator is 1.
find a common denominator for all three and then add all of the numerators together and keep the same denominator
If 9, 11, and 16 are all denominators, you could multiply them together to come up with a common denominator of 1,584.
these are all prime numbers so if they are denominators, the least common denominator would be their product. 5x7x9x11 = 3465
Option 1: Find a common denominator for the two fractions. It need not be the least common denominator; for example, for two fractions, if you just multiply the two denominators, you get a common denominator. Convert all the fractions to the common denominator. Then you can compare. Option 2: Convert each fraction to decimal, by dividing the numerator by the denominator. Then you can compare the decimals.