Compare 20/81 and 15/7
1st number: 20/81, 2nd number: 2 1/7
20/81 is smaller than 15/7
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 7 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 81 × 7 = 567,
20/81 = 20 × 7/81 × 7 = 140/567 - Likewise, for the 2nd fraction, since 7 × 81 = 567,
15/7 = 15 × 81/7 × 81 = 1215/567 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 140/567 < 1215/567 or 20/81 < 15/7
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