Compare 75/21 and 28/40
1st number: 3 12/21, 2nd number: 28/40
75/21 is greater than 28/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
75/21 = 75 × 40/21 × 40 = 3000/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
28/40 = 28 × 21/40 × 21 = 588/840 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 3000/840 > 588/840 or 75/21 > 28/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/21 and 56/40 75/42 and 28/40 75/21 and 28/80 75/21 and 84/40 75/63 and 28/40