3/7 of 63 is 27.
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9 = 3/7 x 21/1 = 63/7
36
5/7 * 63 315/7 = 45 ----------
1 29/63
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).