Compare 45/40 and 12/9
1st number: 1 5/40, 2nd number: 1 3/9
45/40 is smaller than 12/9
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
45/40 = 45 × 9/40 × 9 = 405/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
12/9 = 12 × 40/9 × 40 = 480/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 405/360 < 480/360 or 45/40 < 12/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40 and 12/9 45/40 and 24/9 45/80 and 12/9 45/40 and 12/18 45/40 and 36/9 45/40 and 12/27 45/40 and 60/9 45/40 and 12/45 45/40 and 84/9 45/40 and 12/63