Subtract 15/40 from 20/3
1st number: 6 2/3, 2nd number: 15/40
20/3 - 15/40 is 151/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 3 × 40 = 120,
20/3 = 20 × 40/3 × 40 = 800/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
15/40 = 15 × 3/40 × 3 = 45/120 - Subtract the two like fractions:
800/120 - 45/120 = 800 - 45/120 = 755/120 - After reducing the fraction, the answer is 151/24
- In mixed form: 67/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/3-15/40 20/3-30/40 20/6-15/40 20/3-15/80 60/3-15/40 20/3-45/40 20/9-15/40 20/3-75/40 20/15-15/40 20/21-15/40