Compare 21/50 and 7/18
21/50 is greater than 7/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
21/50 = 21 × 9/50 × 9 = 189/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
7/18 = 7 × 25/18 × 25 = 175/450 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 189/450 > 175/450 or 21/50 > 7/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50 and 7/18 21/50 and 14/18 21/50 and 7/36 63/50 and 7/18 21/50 and 21/18 21/50 and 7/54 21/50 and 35/18 21/50 and 7/90 21/50 and 49/18