Compare 18/30 and 12/27
18/30 is greater than 12/27
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
18/30 = 18 × 9/30 × 9 = 162/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
12/27 = 12 × 10/27 × 10 = 120/270 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 162/270 > 120/270 or 18/30 > 12/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30 and 12/27 18/30 and 24/27 18/60 and 12/27 18/30 and 12/54 54/30 and 12/27 18/30 and 36/27 18/90 and 12/27 18/30 and 12/81 90/30 and 12/27 18/30 and 60/27 18/30 and 84/27