Compare 21/5 and 28/20
1st number: 4 1/5, 2nd number: 1 8/20
21/5 is greater than 28/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
21/5 = 21 × 4/5 × 4 = 84/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
28/20 = 28 × 1/20 × 1 = 28/20 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/20 > 28/20 or 21/5 > 28/20
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