Compare 45/84 and 20/5
1st number: 45/84, 2nd number: 4 0/5
45/84 is smaller than 20/5
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 5 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
45/84 = 45 × 5/84 × 5 = 225/420 - Likewise, for the 2nd fraction, since 5 × 84 = 420,
20/5 = 20 × 84/5 × 84 = 1680/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 225/420 < 1680/420 or 45/84 < 20/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84 and 20/5 45/84 and 40/5 45/84 and 20/10 45/84 and 60/5 45/84 and 20/15 45/84 and 20/25 45/84 and 20/35