Compare 21/14 and 42/20
1st number: 1 7/14, 2nd number: 2 2/20
21/14 is smaller than 42/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
21/14 = 21 × 10/14 × 10 = 210/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
42/20 = 42 × 7/20 × 7 = 294/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 210/140 < 294/140 or 21/14 < 42/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14 and 42/20 21/14 and 84/20 21/28 and 42/20 21/14 and 42/40 63/14 and 42/20 21/42 and 42/20 21/14 and 42/60 21/70 and 42/20 21/98 and 42/20