Compare 18/15 and 27/20
1st number: 1 3/15, 2nd number: 1 7/20
18/15 is smaller than 27/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
18/15 = 18 × 4/15 × 4 = 72/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
27/20 = 27 × 3/20 × 3 = 81/60 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 72/60 < 81/60 or 18/15 < 27/20
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