Compare 81/12 and 21/28
1st number: 6 9/12, 2nd number: 21/28
81/12 is greater than 21/28
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
81/12 = 81 × 7/12 × 7 = 567/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
21/28 = 21 × 3/28 × 3 = 63/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 567/84 > 63/84 or 81/12 > 21/28
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