Compare 30/7 and 20/72
1st number: 4 2/7, 2nd number: 20/72
30/7 is greater than 20/72
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 7 × 72 = 504,
30/7 = 30 × 72/7 × 72 = 2160/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
20/72 = 20 × 7/72 × 7 = 140/504 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 2160/504 > 140/504 or 30/7 > 20/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/7 and 20/72 30/7 and 40/72 30/14 and 20/72 90/7 and 20/72 30/7 and 60/72 30/21 and 20/72 30/35 and 20/72 30/49 and 20/72