Compare 54/21 and 45/36
1st number: 2 12/21, 2nd number: 1 9/36
54/21 is greater than 45/36
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
54/21 = 54 × 12/21 × 12 = 648/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
45/36 = 45 × 7/36 × 7 = 315/252 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 648/252 > 315/252 or 54/21 > 45/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21 and 90/36 54/42 and 45/36 54/21 and 45/72 54/63 and 45/36