Compare 21/18 and 75/4
1st number: 1 3/18, 2nd number: 18 3/4
21/18 is smaller than 75/4
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
21/18 = 21 × 2/18 × 2 = 42/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
75/4 = 75 × 9/4 × 9 = 675/36 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/36 < 675/36 or 21/18 < 75/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18 and 75/4 21/36 and 75/4 21/18 and 75/8 63/18 and 75/4 21/54 and 75/4 21/18 and 75/12 21/90 and 75/4 21/18 and 75/20 21/18 and 75/28