Compare 45/20 and 15/72
1st number: 2 5/20, 2nd number: 15/72
45/20 is greater than 15/72
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
45/20 = 45 × 18/20 × 18 = 810/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
15/72 = 15 × 5/72 × 5 = 75/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 810/360 > 75/360 or 45/20 > 15/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20 and 15/72 45/20 and 30/72 45/40 and 15/72 45/20 and 45/72 45/60 and 15/72 45/20 and 75/72