Compare 9/15 and 20/28
9/15 is smaller than 20/28
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
9/15 = 9 × 28/15 × 28 = 252/420 - 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
- 252/420 < 300/420 or 9/15 < 20/28
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