Compare 40/21 and 35/9
1st number: 1 19/21, 2nd number: 3 8/9
40/21 is smaller than 35/9
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
40/21 = 40 × 3/21 × 3 = 120/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
35/9 = 35 × 7/9 × 7 = 245/63 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 120/63 < 245/63 or 40/21 < 35/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21 and 35/9 40/21 and 70/9 40/42 and 35/9 40/21 and 35/18 40/63 and 35/9 40/21 and 35/27 40/21 and 35/45 40/21 and 35/63