Compare 80/12 and 18/45
1st number: 6 8/12, 2nd number: 18/45
80/12 is greater than 18/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
80/12 = 80 × 15/12 × 15 = 1200/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
18/45 = 18 × 4/45 × 4 = 72/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1200/180 > 72/180 or 80/12 > 18/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12 and 36/45 80/24 and 18/45 80/12 and 18/90 80/12 and 54/45 80/36 and 18/45 80/12 and 90/45 80/60 and 18/45 80/84 and 18/45