Compare 15/90 and 40/84
15/90 is smaller than 40/84
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
15/90 = 15 × 14/90 × 14 = 210/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
40/84 = 40 × 15/84 × 15 = 600/1260 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 210/1260 < 600/1260 or 15/90 < 40/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/90 and 40/84 15/90 and 80/84 45/90 and 40/84 75/90 and 40/84