Compare 7/18 and 21/56
7/18 is greater than 21/56
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 18 × 28 = 504,
7/18 = 7 × 28/18 × 28 = 196/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 196/504 > 189/504 or 7/18 > 21/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18 and 21/56 7/18 and 42/56 7/36 and 21/56 21/18 and 21/56 7/18 and 63/56 7/54 and 21/56 35/18 and 21/56 7/90 and 21/56 49/18 and 21/56