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The greatest common factor of the numbers 28, 35 and 63 is 7.
To determine if 3/7 is greater than 4/9, we need to find a common denominator. The least common multiple of 7 and 9 is 63. Converting 3/7 to have a denominator of 63 gives us 27/63, and converting 4/9 to have a denominator of 63 gives us 28/63. Comparing these fractions, we see that 28/63 (4/9) is indeed greater than 27/63 (3/7).
what is a common denominator for 6, 9 and 3
The greatest common factor of 27,54 and 63 is 9.
The GCF is 7.