Compare 3/21 and 63/10, Which fraction is greater?

Compare 3/21 and 63/10

1^st number: 3/21, 2^nd number: 6 3/10

3/21 is smaller than 63/10

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 21 × 10 = 210,
3/21 = 3 × 10/21 × 10 = 30/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
63/10 = 63 × 21/10 × 21 = 1323/210
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
30/210 < 1323/210 or 3/21 < 63/10

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