Compare 45/21 and 36/5
1st number: 2 3/21, 2nd number: 7 1/5
45/21 is smaller than 36/5
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
45/21 = 45 × 5/21 × 5 = 225/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
36/5 = 36 × 21/5 × 21 = 756/105 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 225/105 < 756/105 or 45/21 < 36/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21 and 36/5 45/21 and 72/5 45/42 and 36/5 45/21 and 36/10 45/63 and 36/5 45/21 and 36/15 45/21 and 36/25 45/21 and 36/35