Compare 42/21 and 3/12
1st number: 2 0/21, 2nd number: 3/12
42/21 is greater than 3/12
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
42/21 = 42 × 4/21 × 4 = 168/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
3/12 = 3 × 7/12 × 7 = 21/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 168/84 > 21/84 or 42/21 > 3/12
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