Subtract 3/20 from 40/12
1st number: 3 4/12, 2nd number: 3/20
40/12 - 3/20 is 191/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
40/12 = 40 × 5/12 × 5 = 200/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
3/20 = 3 × 3/20 × 3 = 9/60 - Subtract the two like fractions:
200/60 - 9/60 = 200 - 9/60 = 191/60 - In mixed form: 311/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12-3/20 40/12-6/20 40/24-3/20 40/12-3/40 40/12-9/20 40/36-3/20 40/12-3/60 40/12-15/20 40/60-3/20 40/12-21/20 40/84-3/20