Compare 21/45 and 75/6
1st number: 21/45, 2nd number: 12 3/6
21/45 is smaller than 75/6
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 6 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Likewise, for the 2nd fraction, since 6 × 15 = 90,
75/6 = 75 × 15/6 × 15 = 1125/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/90 < 1125/90 or 21/45 < 75/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45 and 75/6 21/90 and 75/6 21/45 and 75/12 63/45 and 75/6 21/45 and 75/18 21/45 and 75/30 21/45 and 75/42