Compare 21/98 and 21/15, Which fraction is greater?

Compare 21/98 and 21/15

1^st number: 21/98, 2^nd number: 1 6/15

21/98 is smaller than 21/15

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 15 is 1470

Next, find the equivalent fraction of both fractional numbers with denominator 1470
For the 1st fraction, since 98 × 15 = 1470,
21/98 = 21 × 15/98 × 15 = 315/1470
Likewise, for the 2nd fraction, since 15 × 98 = 1470,
21/15 = 21 × 98/15 × 98 = 2058/1470
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
315/1470 < 2058/1470 or 21/98 < 21/15

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