Compare 21/28 and 28/18
1st number: 21/28, 2nd number: 1 10/18
21/28 is smaller than 28/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
21/28 = 21 × 9/28 × 9 = 189/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
28/18 = 28 × 14/18 × 14 = 392/252 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 189/252 < 392/252 or 21/28 < 28/18
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