Compare 6/49 and 63/81, Which fraction is greater?

Compare 6/49 and 63/81

6/49 is smaller than 63/81

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 81 is 3969

Next, find the equivalent fraction of both fractional numbers with denominator 3969
For the 1st fraction, since 49 × 81 = 3969,
6/49 = 6 × 81/49 × 81 = 486/3969
Likewise, for the 2nd fraction, since 81 × 49 = 3969,
63/81 = 63 × 49/81 × 49 = 3087/3969
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
486/3969 < 3087/3969 or 6/49 < 63/81

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