Compare 21/20 and 1/7
1st number: 1 1/20, 2nd number: 1/7
21/20 is greater than 1/7
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
21/20 = 21 × 7/20 × 7 = 147/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
1/7 = 1 × 20/7 × 20 = 20/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 147/140 > 20/140 or 21/20 > 1/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/20 and 1/7 21/20 and 2/7 21/40 and 1/7 21/20 and 1/14 63/20 and 1/7 21/20 and 3/7 21/60 and 1/7 21/20 and 1/21 21/20 and 5/7 21/20 and 1/35 21/20 and 1/49