Compare 70/21 and 75/4
1st number: 3 7/21, 2nd number: 18 3/4
70/21 is smaller than 75/4
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
70/21 = 70 × 4/21 × 4 = 280/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
75/4 = 75 × 21/4 × 21 = 1575/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 280/84 < 1575/84 or 70/21 < 75/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42 and 75/4 70/21 and 75/8 70/63 and 75/4 70/21 and 75/12 70/21 and 75/20 70/21 and 75/28