Compare 36/2 and 45/21
1st number: 18 0/2, 2nd number: 2 3/21
36/2 is greater than 45/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
36/2 = 36 × 21/2 × 21 = 756/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
45/21 = 45 × 2/21 × 2 = 90/42 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 756/42 > 90/42 or 36/2 > 45/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/2 and 45/21 36/2 and 90/21 36/4 and 45/21 36/2 and 45/42 36/6 and 45/21 36/2 and 45/63 36/10 and 45/21 36/14 and 45/21