Compare 18/21 and 60/45
1st number: 18/21, 2nd number: 1 15/45
18/21 is smaller than 60/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
18/21 = 18 × 15/21 × 15 = 270/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
60/45 = 60 × 7/45 × 7 = 420/315 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 270/315 < 420/315 or 18/21 < 60/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/21 and 60/45 18/42 and 60/45 18/21 and 60/90 54/21 and 60/45 18/63 and 60/45 90/21 and 60/45