Subtract 4/20 from 20/12
1st number: 1 8/12, 2nd number: 4/20
20/12 - 4/20 is 22/15.
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,
20/12 = 20 × 5/12 × 5 = 100/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
4/20 = 4 × 3/20 × 3 = 12/60 - Subtract the two like fractions:
100/60 - 12/60 = 100 - 12/60 = 88/60 - After reducing the fraction, the answer is 22/15
- In mixed form: 17/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12-4/20 20/12-8/20 20/24-4/20 20/12-4/40 60/12-4/20 20/12-12/20 20/36-4/20 20/12-4/60 20/60-4/20 20/12-28/20 20/84-4/20