Compare 30/21 and 12/54, Which fraction is greater?

Compare 30/21 and 12/54

1^st number: 1 9/21, 2^nd number: 12/54

30/21 is greater than 12/54

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

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 21 × 18 = 378,
30/21 = 30 × 18/21 × 18 = 540/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
12/54 = 12 × 7/54 × 7 = 84/378
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
540/378 > 84/378 or 30/21 > 12/54

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