Compare 15/45 and 5/40
15/45 is greater than 5/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
15/45 = 15 × 8/45 × 8 = 120/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
5/40 = 5 × 9/40 × 9 = 45/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 120/360 > 45/360 or 15/45 > 5/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/45 and 5/40 15/45 and 10/40 15/90 and 5/40 15/45 and 5/80 15/45 and 15/40 75/45 and 5/40 15/45 and 25/40 15/45 and 35/40