Subtract 20/3 from 3/40
1st number: 3/40, 2nd number: 6 2/3
3/40 - 20/3 is -791/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 3 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
3/40 = 3 × 3/40 × 3 = 9/120 - Likewise, for the 2nd fraction, since 3 × 40 = 120,
20/3 = 20 × 40/3 × 40 = 800/120 - Subtract the two like fractions:
9/120 - 800/120 = 9 - 800/120 = -791/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40-20/3 3/40-40/3 3/80-20/3 3/40-20/6 9/40-20/3 3/40-60/3 3/40-20/9 15/40-20/3 3/40-20/15 21/40-20/3 3/40-20/21