Compare 84/2 and 21/45
1st number: 42 0/2, 2nd number: 21/45
84/2 is greater than 21/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
84/2 = 84 × 45/2 × 45 = 3780/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 3780/90 > 42/90 or 84/2 > 21/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2 and 42/45 84/4 and 21/45 84/2 and 21/90 84/2 and 63/45 84/6 and 21/45 84/10 and 21/45 84/14 and 21/45