Compare 21/2 and 84/20
1st number: 10 1/2, 2nd number: 4 4/20
21/2 is greater than 84/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
21/2 = 21 × 10/2 × 10 = 210/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
84/20 = 84 × 1/20 × 1 = 84/20 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 210/20 > 84/20 or 21/2 > 84/20
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