Compare 7/28 and 21/27
7/28 is smaller than 21/27
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
7/28 = 7 × 27/28 × 27 = 189/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
21/27 = 21 × 28/27 × 28 = 588/756 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 189/756 < 588/756 or 7/28 < 21/27
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