Compare 28/21 and 40/35
1st number: 1 7/21, 2nd number: 1 5/35
28/21 is greater than 40/35
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
28/21 = 28 × 5/21 × 5 = 140/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
40/35 = 40 × 3/35 × 3 = 120/105 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 140/105 > 120/105 or 28/21 > 40/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21 and 40/35 28/21 and 80/35 28/42 and 40/35 28/21 and 40/70 84/21 and 40/35 28/63 and 40/35