Compare 21/56 and 15/7
1st number: 21/56, 2nd number: 2 1/7
21/56 is smaller than 15/7
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
21/56 = 21 × 1/56 × 1 = 21/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
15/7 = 15 × 8/7 × 8 = 120/56 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 21/56 < 120/56 or 21/56 < 15/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56 and 15/7 21/56 and 30/7 21/56 and 15/14 63/56 and 15/7 21/56 and 45/7 21/56 and 15/21 21/56 and 75/7 21/56 and 15/35 21/56 and 15/49