Subtract 81/40 from 45/14
1st number: 3 3/14, 2nd number: 2 1/40
45/14 - 81/40 is 333/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 14 × 20 = 280,
45/14 = 45 × 20/14 × 20 = 900/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
81/40 = 81 × 7/40 × 7 = 567/280 - Subtract the two like fractions:
900/280 - 567/280 = 900 - 567/280 = 333/280 - In mixed form: 153/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/14-81/40 45/28-81/40 45/14-81/80 45/42-81/40 45/70-81/40 45/98-81/40