Compare 72/15 and 70/20
1st number: 4 12/15, 2nd number: 3 10/20
72/15 is greater than 70/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
72/15 = 72 × 4/15 × 4 = 288/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
70/20 = 70 × 3/20 × 3 = 210/60 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 288/60 > 210/60 or 72/15 > 70/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30 and 70/20 72/15 and 70/40 72/45 and 70/20 72/15 and 70/60 72/75 and 70/20