Compare 18/20 and 12/28
18/20 is greater than 12/28
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
18/20 = 18 × 7/20 × 7 = 126/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
12/28 = 12 × 5/28 × 5 = 60/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 126/140 > 60/140 or 18/20 > 12/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20 and 12/28 18/20 and 24/28 18/40 and 12/28 18/20 and 12/56 54/20 and 12/28 18/20 and 36/28 18/60 and 12/28 18/20 and 12/84 90/20 and 12/28 18/20 and 60/28 18/20 and 84/28