Compare 84/42 and 21/20
1st number: 2 0/42, 2nd number: 1 1/20
84/42 is greater than 21/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
84/42 = 84 × 10/42 × 10 = 840/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
21/20 = 21 × 21/20 × 21 = 441/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 840/420 > 441/420 or 84/42 > 21/20
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