Compare 12/56 and 56/81, Which fraction is greater?

Compare 12/56 and 56/81

12/56 is smaller than 56/81

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 81 is 4536

Next, find the equivalent fraction of both fractional numbers with denominator 4536
For the 1st fraction, since 56 × 81 = 4536,
12/56 = 12 × 81/56 × 81 = 972/4536
Likewise, for the 2nd fraction, since 81 × 56 = 4536,
56/81 = 56 × 56/81 × 56 = 3136/4536
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
972/4536 < 3136/4536 or 12/56 < 56/81

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