Compare 45/10 and 75/21
1st number: 4 5/10, 2nd number: 3 12/21
45/10 is greater than 75/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
45/10 = 45 × 21/10 × 21 = 945/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
75/21 = 75 × 10/21 × 10 = 750/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 945/210 > 750/210 or 45/10 > 75/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10 and 75/21 45/20 and 75/21 45/10 and 75/42 45/30 and 75/21 45/10 and 75/63 45/50 and 75/21 45/70 and 75/21