Compare 70/12 and 21/81, Which fraction is greater?

Compare 70/12 and 21/81

1^st number: 5 10/12, 2^nd number: 21/81

70/12 is greater than 21/81

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 81 is 324

Next, find the equivalent fraction of both fractional numbers with denominator 324
For the 1st fraction, since 12 × 27 = 324,
70/12 = 70 × 27/12 × 27 = 1890/324
Likewise, for the 2nd fraction, since 81 × 4 = 324,
21/81 = 21 × 4/81 × 4 = 84/324
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
1890/324 > 84/324 or 70/12 > 21/81

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