Compare 50/21 and 42/81, Which fraction is greater?

Compare 50/21 and 42/81

1^st number: 2 8/21, 2^nd number: 42/81

50/21 is greater than 42/81

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 81 is 567

Next, find the equivalent fraction of both fractional numbers with denominator 567
For the 1st fraction, since 21 × 27 = 567,
50/21 = 50 × 27/21 × 27 = 1350/567
Likewise, for the 2nd fraction, since 81 × 7 = 567,
42/81 = 42 × 7/81 × 7 = 294/567
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
1350/567 > 294/567 or 50/21 > 42/81

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