Compare 45/15 and 21/6
1st number: 3 0/15, 2nd number: 3 3/6
45/15 is smaller than 21/6
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
45/15 = 45 × 2/15 × 2 = 90/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
21/6 = 21 × 5/6 × 5 = 105/30 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 90/30 < 105/30 or 45/15 < 21/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15 and 21/6 45/15 and 42/6 45/30 and 21/6 45/15 and 21/12 45/15 and 63/6 45/15 and 21/18 45/75 and 21/6 45/15 and 21/30 45/15 and 21/42