Compare 20/15 and 21/36
1st number: 1 5/15, 2nd number: 21/36
20/15 is greater than 21/36
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 15 × 12 = 180,
20/15 = 20 × 12/15 × 12 = 240/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 240/180 > 105/180 or 20/15 > 21/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15 and 21/36 20/15 and 42/36 20/30 and 21/36 20/15 and 21/72 60/15 and 21/36 20/15 and 63/36 20/45 and 21/36 20/75 and 21/36