Compare 21/15 and 18/28
1st number: 1 6/15, 2nd number: 18/28
21/15 is greater than 18/28
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,
21/15 = 21 × 28/15 × 28 = 588/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
18/28 = 18 × 15/28 × 15 = 270/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 588/420 > 270/420 or 21/15 > 18/28
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