Compare 28/21 and 81/36
1st number: 1 7/21, 2nd number: 2 9/36
28/21 is smaller than 81/36
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
28/21 = 28 × 12/21 × 12 = 336/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
81/36 = 81 × 7/36 × 7 = 567/252 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 336/252 < 567/252 or 28/21 < 81/36
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