Compare 27/30 and 20/28
27/30 is greater than 20/28
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
27/30 = 27 × 14/30 × 14 = 378/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
20/28 = 20 × 15/28 × 15 = 300/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 378/420 > 300/420 or 27/30 > 20/28
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