Compare 21/15 and 16/20
1st number: 1 6/15, 2nd number: 16/20
21/15 is greater than 16/20
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,
21/15 = 21 × 4/15 × 4 = 84/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
16/20 = 16 × 3/20 × 3 = 48/60 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/60 > 48/60 or 21/15 > 16/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15 and 16/20 21/15 and 32/20 21/30 and 16/20 21/15 and 16/40 63/15 and 16/20 21/15 and 48/20 21/45 and 16/20 21/15 and 16/60 21/15 and 80/20 21/75 and 16/20