Compare 14/90 and 4/21
14/90 is smaller than 4/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
14/90 = 14 × 7/90 × 7 = 98/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
4/21 = 4 × 30/21 × 30 = 120/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 98/630 < 120/630 or 14/90 < 4/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/90 and 4/21 14/90 and 8/21 14/90 and 4/42 42/90 and 4/21 14/90 and 12/21 14/90 and 4/63 70/90 and 4/21 14/90 and 20/21 98/90 and 4/21 14/90 and 28/21