Compare 28/42 and 4/20
28/42 is greater than 4/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
28/42 = 28 × 10/42 × 10 = 280/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
4/20 = 4 × 21/20 × 21 = 84/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 280/420 > 84/420 or 28/42 > 4/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42 and 4/20 28/42 and 8/20 28/84 and 4/20 28/42 and 4/40 84/42 and 4/20 28/42 and 12/20 28/42 and 4/60 28/42 and 28/20