Compare 20/81 and 84/12, Which fraction is greater?

Compare 20/81 and 84/12

1^st number: 20/81, 2^nd number: 7 0/12

20/81 is smaller than 84/12

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

Next, find the equivalent fraction of both fractional numbers with denominator 324
For the 1st fraction, since 81 × 4 = 324,
20/81 = 20 × 4/81 × 4 = 80/324
Likewise, for the 2nd fraction, since 12 × 27 = 324,
84/12 = 84 × 27/12 × 27 = 2268/324
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
80/324 < 2268/324 or 20/81 < 84/12

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