Subtract 3/20 from 15/12
1st number: 1 3/12, 2nd number: 3/20
15/12 - 3/20 is 11/10.
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,
15/12 = 15 × 5/12 × 5 = 75/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
3/20 = 3 × 3/20 × 3 = 9/60 - Subtract the two like fractions:
75/60 - 9/60 = 75 - 9/60 = 66/60 - After reducing the fraction, the answer is 11/10
- In mixed form: 11/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12-3/20 15/12-6/20 15/24-3/20 15/12-3/40 45/12-3/20 15/12-9/20 15/36-3/20 15/12-3/60 75/12-3/20 15/12-15/20 15/60-3/20 15/12-21/20 15/84-3/20