Compare 3/21 and 25/8, Which fraction is greater?

Compare 3/21 and 25/8

1^st number: 3/21, 2^nd number: 3 1/8

3/21 is smaller than 25/8

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 21 × 8 = 168,
3/21 = 3 × 8/21 × 8 = 24/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
25/8 = 25 × 21/8 × 21 = 525/168
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
24/168 < 525/168 or 3/21 < 25/8

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