Compare 63/54 and 81/21, Which fraction is greater?

Compare 63/54 and 81/21

1^st number: 1 9/54, 2^nd number: 3 18/21

63/54 is smaller than 81/21

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 54 × 7 = 378,
63/54 = 63 × 7/54 × 7 = 441/378
Likewise, for the 2nd fraction, since 21 × 18 = 378,
81/21 = 81 × 18/21 × 18 = 1458/378
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
441/378 < 1458/378 or 63/54 < 81/21

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