Compare 30/21 and 2/15, Which fraction is greater?

Compare 30/21 and 2/15

1^st number: 1 9/21, 2^nd number: 2/15

30/21 is greater than 2/15

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 15 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 21 × 5 = 105,
30/21 = 30 × 5/21 × 5 = 150/105
Likewise, for the 2nd fraction, since 15 × 7 = 105,
2/15 = 2 × 7/15 × 7 = 14/105
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
150/105 > 14/105 or 30/21 > 2/15

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